Allowance for Loan and Lease Losses (Credit Quality Information) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Credit Quality Information    
Total Loans and Leases $ 6,822,527 $ 6,737,816
Originated    
Credit Quality Information    
Total Loans and Leases 6,822,527 6,449,687
Acquired    
Credit Quality Information    
Total Loans and Leases   288,129
Commercial real estate    
Credit Quality Information    
2020 79,035  
2019 405,933  
2018 304,720  
2017 285,203  
2016 291,592  
Prior 1,096,281  
Revolving Loans 52,470  
Revolving Loans Converted to Term Loans 11,689  
Total Loans and Leases 2,526,923 2,491,011
Commercial real estate | Originated    
Credit Quality Information    
Total Loans and Leases   2,400,037
Commercial real estate | Acquired    
Credit Quality Information    
Total Loans and Leases   90,974
Commercial real estate | Pass    
Credit Quality Information    
2020 79,035  
2019 405,437  
2018 304,254  
2017 284,975  
2016 289,293  
Prior 1,069,498  
Revolving Loans 52,470  
Revolving Loans Converted to Term Loans 11,622  
Total Loans and Leases 2,496,584  
Commercial real estate | Pass | Originated    
Credit Quality Information    
Total Loans and Leases   2,379,925
Commercial real estate | Pass | Acquired    
Credit Quality Information    
Total Loans and Leases   81,360
Commercial real estate | OAEM    
Credit Quality Information    
2020 0  
2019 496  
2018 0  
2017 0  
2016 2,253  
Prior 14,750  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 17,499  
Commercial real estate | OAEM | Originated    
Credit Quality Information    
Total Loans and Leases   17,006
Commercial real estate | OAEM | Acquired    
Credit Quality Information    
Total Loans and Leases   597
Commercial real estate | Substandard    
Credit Quality Information    
2020 0  
2019 0  
2018 466  
2017 228  
2016 46  
Prior 12,033  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 67  
Total Loans and Leases 12,840  
Commercial real estate | Substandard | Originated    
Credit Quality Information    
Total Loans and Leases   3,106
Commercial real estate | Substandard | Acquired    
Credit Quality Information    
Total Loans and Leases   9,017
Commercial real estate | Doubtful | Originated    
Credit Quality Information    
Total Loans and Leases   0
Commercial real estate | Doubtful | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Multi-family mortgage    
Credit Quality Information    
2020 35,322  
2019 112,126  
2018 142,968  
2017 109,573  
2016 130,412  
Prior 368,436  
Revolving Loans 52,284  
Revolving Loans Converted to Term Loans 12,152  
Total Loans and Leases 963,273 932,163
Multi-family mortgage | Originated    
Credit Quality Information    
Total Loans and Leases   896,482
Multi-family mortgage | Acquired    
Credit Quality Information    
Total Loans and Leases   35,681
Multi-family mortgage | Pass    
Credit Quality Information    
2020 35,322  
2019 112,126  
2018 142,968  
2017 109,573  
2016 130,328  
Prior 368,436  
Revolving Loans 52,284  
Revolving Loans Converted to Term Loans 12,152  
Total Loans and Leases 963,189  
Multi-family mortgage | Pass | Originated    
Credit Quality Information    
Total Loans and Leases   896,398
Multi-family mortgage | Pass | Acquired    
Credit Quality Information    
Total Loans and Leases   35,681
Multi-family mortgage | OAEM | Originated    
Credit Quality Information    
Total Loans and Leases   0
Multi-family mortgage | OAEM | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Multi-family mortgage | Substandard    
Credit Quality Information    
2020 0  
2019 0  
2018 0  
2017 0  
2016 84  
Prior 0  
Revolving Loans  
Revolving Loans Converted to Term Loans  
Total Loans and Leases 84  
Multi-family mortgage | Substandard | Originated    
Credit Quality Information    
Total Loans and Leases   84
Multi-family mortgage | Substandard | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Multi-family mortgage | Doubtful | Originated    
Credit Quality Information    
Total Loans and Leases   0
Multi-family mortgage | Doubtful | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Construction    
Credit Quality Information    
2020 8,556  
2019 68,836  
2018 165,940  
2017 9,599  
2016 8,848  
Prior 722  
Revolving Loans 9,461  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 271,962 246,048
Construction | Originated    
Credit Quality Information    
Total Loans and Leases   239,015
Construction | Acquired    
Credit Quality Information    
Total Loans and Leases   7,033
Construction | Pass    
Credit Quality Information    
2020 8,556  
2019 68,836  
2018 165,940  
2017 9,599  
2016 8,848  
Prior 722  
Revolving Loans 9,461  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 271,962  
Construction | Pass | Originated    
Credit Quality Information    
Total Loans and Leases   239,015
Construction | Pass | Acquired    
Credit Quality Information    
Total Loans and Leases   7,033
Construction | OAEM | Originated    
Credit Quality Information    
Total Loans and Leases   0
Construction | OAEM | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Construction | Substandard | Originated    
Credit Quality Information    
Total Loans and Leases   0
Construction | Substandard | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Construction | Doubtful | Originated    
Credit Quality Information    
Total Loans and Leases   0
Construction | Doubtful | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Commercial    
Credit Quality Information    
2020 19,210  
2019 85,409  
2018 62,979  
2017 81,150  
2016 33,255  
Prior 140,809  
Revolving Loans 291,818  
Revolving Loans Converted to Term Loans 4,578  
Total Loans and Leases 719,208 729,502
Commercial | Originated    
Credit Quality Information    
Total Loans and Leases   713,875
Commercial | Acquired    
Credit Quality Information    
Total Loans and Leases   15,627
Commercial | Pass    
Credit Quality Information    
2020 19,210  
2019 85,409  
2018 62,169  
2017 80,508  
2016 31,373  
Prior 129,970  
Revolving Loans 286,535  
Revolving Loans Converted to Term Loans 3,589  
Total Loans and Leases 698,763  
Commercial | Pass | Originated    
Credit Quality Information    
Total Loans and Leases   688,268
Commercial | Pass | Acquired    
Credit Quality Information    
Total Loans and Leases   15,215
Commercial | OAEM    
Credit Quality Information    
2020 0  
2019 0  
2018 25  
2017 0  
2016 73  
Prior 40  
Revolving Loans 4,302  
Revolving Loans Converted to Term Loans 376  
Total Loans and Leases 4,816  
Commercial | OAEM | Originated    
Credit Quality Information    
Total Loans and Leases   10,803
Commercial | OAEM | Acquired    
Credit Quality Information    
Total Loans and Leases   210
Commercial | Substandard    
Credit Quality Information    
2020 0  
2019 0  
2018 785  
2017 642  
2016 1,809  
Prior 10,799  
Revolving Loans 981  
Revolving Loans Converted to Term Loans 612  
Total Loans and Leases 15,628  
Commercial | Substandard | Originated    
Credit Quality Information    
Total Loans and Leases   14,801
Commercial | Substandard | Acquired    
Credit Quality Information    
Total Loans and Leases   202
Commercial | Doubtful    
Credit Quality Information    
2020 0  
2019 0  
2018 0  
2017 0  
2016 0  
Prior 0  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 1  
Total Loans and Leases 1  
Commercial | Doubtful | Originated    
Credit Quality Information    
Total Loans and Leases   3
Commercial | Doubtful | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Equipment financing    
Credit Quality Information    
2020 81,915  
2019 374,299  
2018 273,010  
2017 168,439  
2016 86,732  
Prior 68,661  
Revolving Loans 1,261  
Revolving Loans Converted to Term Loans 736  
Total Loans and Leases 1,055,053 1,052,408
Equipment financing | Originated    
Credit Quality Information    
Total Loans and Leases   1,049,997
Equipment financing | Acquired    
Credit Quality Information    
Total Loans and Leases   2,411
Equipment financing | Pass    
Credit Quality Information    
2020 81,915  
2019 372,988  
2018 270,215  
2017 165,961  
2016 83,859  
Prior 66,392  
Revolving Loans 1,261  
Revolving Loans Converted to Term Loans 736  
Total Loans and Leases 1,043,327  
Equipment financing | Pass | Originated    
Credit Quality Information    
Total Loans and Leases   1,038,793
Equipment financing | Pass | Acquired    
Credit Quality Information    
Total Loans and Leases   2,404
Equipment financing | OAEM    
Credit Quality Information    
2020 0  
2019 0  
2018 0  
2017 0  
2016 1,322  
Prior 42  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 1,364  
Equipment financing | OAEM | Originated    
Credit Quality Information    
Total Loans and Leases   1,389
Equipment financing | OAEM | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Equipment financing | Substandard    
Credit Quality Information    
2020 0  
2019 969  
2018 2,429  
2017 2,168  
2016 1,457  
Prior 2,127  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 9,150  
Equipment financing | Substandard | Originated    
Credit Quality Information    
Total Loans and Leases   7,995
Equipment financing | Substandard | Acquired    
Credit Quality Information    
Total Loans and Leases   7
Equipment financing | Doubtful    
Credit Quality Information    
2020 0  
2019 342  
2018 366  
2017 310  
2016 94  
Prior 100  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 1,212  
Equipment financing | Doubtful | Originated    
Credit Quality Information    
Total Loans and Leases   1,820
Equipment financing | Doubtful | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Condominium association    
Credit Quality Information    
2020 809  
2019 10,848  
2018 6,002  
2017 9,380  
2016 6,501  
Prior 16,832  
Revolving Loans 1,659  
Revolving Loans Converted to Term Loans 574  
Total Loans and Leases 52,605 56,838
Condominium association | Originated    
Credit Quality Information    
Total Loans and Leases   56,838
Condominium association | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Condominium association | Pass    
Credit Quality Information    
2020 809  
2019 10,848  
2018 6,002  
2017 9,380  
2016 6,371  
Prior 16,759  
Revolving Loans 1,659  
Revolving Loans Converted to Term Loans 574  
Total Loans and Leases 52,402  
Condominium association | Pass | Originated    
Credit Quality Information    
Total Loans and Leases   56,687
Condominium association | Pass | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Condominium association | OAEM | Originated    
Credit Quality Information    
Total Loans and Leases   0
Condominium association | OAEM | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Condominium association | Substandard    
Credit Quality Information    
2020 0  
2019 0  
2018 0  
2017 0  
2016 130  
Prior 73  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 203  
Condominium association | Substandard | Originated    
Credit Quality Information    
Total Loans and Leases   151
Condominium association | Substandard | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Condominium association | Doubtful | Originated    
Credit Quality Information    
Total Loans and Leases   0
Condominium association | Doubtful | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Other consumer    
Credit Quality Information    
2020 929  
2019 662  
2018 8,984  
2017 553  
2016 579  
Prior 595  
Revolving Loans 22,446  
Revolving Loans Converted to Term Loans 19  
Total Loans and Leases 34,767 38,782
Other consumer | Originated    
Credit Quality Information    
Total Loans and Leases   38,674
Other consumer | Acquired    
Credit Quality Information    
Total Loans and Leases   108
Other consumer | Pass    
Credit Quality Information    
2020 929  
2019 662  
2018 8,984  
2017 553  
2016 579  
Prior 593  
Revolving Loans 22,446  
Revolving Loans Converted to Term Loans 19  
Total Loans and Leases 34,765  
Other consumer | Pass | Originated    
Credit Quality Information    
Total Loans and Leases   38,673
Other consumer | Pass | Acquired    
Credit Quality Information    
Total Loans and Leases   108
Other consumer | OAEM | Originated    
Credit Quality Information    
Total Loans and Leases   0
Other consumer | OAEM | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Other consumer | Substandard    
Credit Quality Information    
2020 0  
2019 0  
2018 0  
2017 0  
2016 0  
Prior 2  
Revolving Loans  
Revolving Loans Converted to Term Loans  
Total Loans and Leases 2  
Other consumer | Substandard | Originated    
Credit Quality Information    
Total Loans and Leases   1
Other consumer | Substandard | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Other consumer | Doubtful | Originated    
Credit Quality Information    
Total Loans and Leases   0
Other consumer | Doubtful | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Total    
Credit Quality Information    
2020 225,776  
2019 1,058,113  
2018 964,603  
2017 663,897  
2016 557,919  
Prior 1,692,336  
Revolving Loans 431,399  
Revolving Loans Converted to Term Loans 29,748  
Total Loans and Leases 5,623,791 5,546,752
Total | Originated    
Credit Quality Information    
Total Loans and Leases   5,394,918
Total | Acquired    
Credit Quality Information    
Total Loans and Leases   151,834
Total | Pass    
Credit Quality Information    
2020 225,776  
2019 1,056,306  
2018 960,532  
2017 660,549  
2016 550,651  
Prior 1,652,370  
Revolving Loans 426,116  
Revolving Loans Converted to Term Loans 28,692  
Total Loans and Leases 5,560,992  
Total | Pass | Originated    
Credit Quality Information    
Total Loans and Leases   5,337,759
Total | Pass | Acquired    
Credit Quality Information    
Total Loans and Leases   141,801
Total | OAEM    
Credit Quality Information    
2020 0  
2019 496  
2018 25  
2017 0  
2016 3,648  
Prior 14,832  
Revolving Loans 4,302  
Revolving Loans Converted to Term Loans 376  
Total Loans and Leases 23,679  
Total | OAEM | Originated    
Credit Quality Information    
Total Loans and Leases   29,198
Total | OAEM | Acquired    
Credit Quality Information    
Total Loans and Leases   807
Total | Substandard    
Credit Quality Information    
2020 0  
2019 969  
2018 3,680  
2017 3,038  
2016 3,526  
Prior 25,034  
Revolving Loans 981  
Revolving Loans Converted to Term Loans 679  
Total Loans and Leases 37,907  
Total | Substandard | Originated    
Credit Quality Information    
Total Loans and Leases   26,138
Total | Substandard | Acquired    
Credit Quality Information    
Total Loans and Leases   9,226
Total | Doubtful    
Credit Quality Information    
2020 0  
2019 342  
2018 366  
2017 310  
2016 94  
Prior 100  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 1  
Total Loans and Leases 1,213  
Total | Doubtful | Originated    
Credit Quality Information    
Total Loans and Leases   1,823
Total | Doubtful | Acquired    
Credit Quality Information    
Total Loans and Leases   0
Home equity    
Credit Quality Information    
2020 852  
2019 5,240  
2018 5,242  
2017 4,560  
2016 1,722  
Prior 22,997  
Revolving Loans 339,926  
Revolving Loans Converted to Term Loans 8,011  
Total Loans and Leases 388,550 $ 376,819
Percentage of loans to aggregate outstanding amount   100.00%
Home equity | Originated    
Credit Quality Information    
Total Loans and Leases   $ 343,247
Percentage of loans to aggregate outstanding amount   91.00%
Home equity | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 33,572
Percentage of loans to aggregate outstanding amount   9.00%
Home equity | Loan-to-value ratio, less than 50% | Originated    
Credit Quality Information    
Total Loans and Leases   $ 132,736
Percentage of loans to aggregate outstanding amount   35.20%
Home equity | Loan-to-value ratio, less than 50% | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 16,882
Percentage of loans to aggregate outstanding amount   4.50%
Home equity | Loan-to-value ratio, 50% - 69% | Originated    
Credit Quality Information    
Total Loans and Leases   $ 91,681
Percentage of loans to aggregate outstanding amount   24.30%
Home equity | Loan-to-value ratio, 50% - 69% | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 7,958
Percentage of loans to aggregate outstanding amount   2.10%
Home equity | Loan-to-value ratio, 70% - 79% | Originated    
Credit Quality Information    
Total Loans and Leases   $ 81,459
Percentage of loans to aggregate outstanding amount   21.60%
Home equity | Loan-to-value ratio, 70% - 79% | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 705
Percentage of loans to aggregate outstanding amount   0.20%
Home equity | Loan-to-value ratio, 80% and greater than | Originated    
Credit Quality Information    
Total Loans and Leases   $ 37,371
Percentage of loans to aggregate outstanding amount   9.90%
Home equity | Loan-to-value ratio, 80% and greater than | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 4,726
Percentage of loans to aggregate outstanding amount   1.30%
Home equity | Data not available | Originated    
Credit Quality Information    
Total Loans and Leases   $ 0
Percentage of loans to aggregate outstanding amount   0.00%
Home equity | Data not available | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 3,301
Percentage of loans to aggregate outstanding amount   0.90%
Residential mortgage    
Credit Quality Information    
2020 38,674  
2019 159,498  
2018 122,709  
2017 113,030  
2016 84,004  
Prior 287,121  
Revolving Loans 3,793  
Revolving Loans Converted to Term Loans 1,357  
Total Loans and Leases 810,186 $ 814,245
Percentage of loans to aggregate outstanding amount   100.00%
Residential mortgage | Originated    
Credit Quality Information    
Total Loans and Leases   $ 711,522
Percentage of loans to aggregate outstanding amount   87.40%
Residential mortgage | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 102,723
Percentage of loans to aggregate outstanding amount   12.60%
Residential mortgage | Loan-to-value ratio, less than 50% | Originated    
Credit Quality Information    
Total Loans and Leases   $ 184,628
Percentage of loans to aggregate outstanding amount   22.70%
Residential mortgage | Loan-to-value ratio, less than 50% | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 32,838
Percentage of loans to aggregate outstanding amount   4.00%
Residential mortgage | Loan-to-value ratio, 50% - 69% | Originated    
Credit Quality Information    
Total Loans and Leases   $ 293,976
Percentage of loans to aggregate outstanding amount   36.10%
Residential mortgage | Loan-to-value ratio, 50% - 69% | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 44,754
Percentage of loans to aggregate outstanding amount   5.40%
Residential mortgage | Loan-to-value ratio, 70% - 79% | Originated    
Credit Quality Information    
Total Loans and Leases   $ 204,600
Percentage of loans to aggregate outstanding amount   25.10%
Residential mortgage | Loan-to-value ratio, 70% - 79% | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 14,305
Percentage of loans to aggregate outstanding amount   1.80%
Residential mortgage | Loan-to-value ratio, 80% and greater than | Originated    
Credit Quality Information    
Total Loans and Leases   $ 25,664
Percentage of loans to aggregate outstanding amount   3.20%
Residential mortgage | Loan-to-value ratio, 80% and greater than | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 4,608
Percentage of loans to aggregate outstanding amount   0.60%
Residential mortgage | Data not available | Originated    
Credit Quality Information    
Total Loans and Leases   $ 2,654
Percentage of loans to aggregate outstanding amount   0.30%
Residential mortgage | Data not available | Acquired    
Credit Quality Information    
Total Loans and Leases   $ 6,218
Percentage of loans to aggregate outstanding amount   0.80%
Over 700 | Home equity    
Credit Quality Information    
2020 819  
2019 4,499  
2018 4,370  
2017 3,853  
2016 1,330  
Prior 16,556  
Revolving Loans 275,436  
Revolving Loans Converted to Term Loans 3,778  
Total Loans and Leases 310,641  
Over 700 | Residential mortgage    
Credit Quality Information    
2020 22,590  
2019 109,958  
2018 83,081  
2017 68,973  
2016 60,377  
Prior 155,544  
Revolving Loans 3,793  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 504,316  
661 - 700 | Home equity    
Credit Quality Information    
2020 33  
2019 522  
2018 591  
2017 693  
2016 350  
Prior 3,813  
Revolving Loans 43,883  
Revolving Loans Converted to Term Loans 1,746  
Total Loans and Leases 51,631  
661 - 700 | Residential mortgage    
Credit Quality Information    
2020 5,083  
2019 22,555  
2018 14,052  
2017 19,070  
2016 11,256  
Prior 29,870  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 101,886  
600 and below | Home equity    
Credit Quality Information    
2020 0  
2019 219  
2018 281  
2017 14  
2016 42  
Prior 610  
Revolving Loans 10,478  
Revolving Loans Converted to Term Loans 917  
Total Loans and Leases 12,561  
600 and below | Residential mortgage    
Credit Quality Information    
2020 3,058  
2019 6,541  
2018 5,193  
2017 9,142  
2016 6,736  
Prior 16,974  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 0  
Total Loans and Leases 47,644  
Data not available | Home equity    
Credit Quality Information    
2020 0  
2019 0  
2018 0  
2017 0  
2016 0  
Prior 2,018  
Revolving Loans 10,129  
Revolving Loans Converted to Term Loans 1,570  
Total Loans and Leases 13,717  
Data not available | Residential mortgage    
Credit Quality Information    
2020 7,943  
2019 20,444  
2018 20,383  
2017 15,845  
2016 5,635  
Prior 84,733  
Revolving Loans 0  
Revolving Loans Converted to Term Loans 1,357  
Total Loans and Leases $ 156,340