CONSOLIDATED STATEMENTS OF INCOME - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Interest income        
Loans, including fees $ 66,997 $ 58,694 $ 194,820 $ 167,744
Investment securities        
Taxable 10,326 9,986 32,405 28,875
Tax-exempt 1,083 1,163 3,401 3,419
Total interest on investment securities 11,409 11,149 35,806 32,294
Other earning assets (1,081) (1,168) (3,323) (3,511)
Total interest income 77,325 68,675 227,303 196,527
Interest expense        
Deposits 5,600 4,861 16,587 14,302
Short-term borrowings 1,368 374 3,591 930
Long-term borrowings 1,539 281 4,620 876
Total interest expense 8,507 5,516 24,798 16,108
Net interest income 68,818 63,159 202,505 180,419
Provision for loan and lease losses 1,687 2,647 7,379 7,777
Net interest income after provision for loan and lease losses 67,131 60,512 195,126 172,642
Noninterest income        
Service charges on deposit accounts 5,056 4,934 13,892 14,260
Trust and wealth management fees 3,236 3,134 9,959 10,042
Bankcard income 2,984 2,909 8,996 8,501
Client derivative fees 1,210 1,604 4,104 3,444
Net gains from sales of loans 2,066 1,758 5,093 5,146
Net gains on sales of investment securities 398 409 234 1,503
FDIC loss sharing income (638) (973) (1,144) (2,323)
Accelerated discount on covered/formerly covered loans 491 3,820 2,653 10,006
Other 2,146 2,760 8,868 8,804
Total noninterest income 16,949 20,355 52,655 59,383
Noninterest expenses        
Salaries and employee benefits 32,093 27,768 91,234 82,160
Net occupancy 4,543 4,510 13,991 13,895
Furniture and equipment 2,139 2,165 6,482 6,537
Data processing 2,828 2,591 8,311 8,020
Marketing 641 810 2,507 2,671
Communication 527 531 1,485 1,659
Professional services 1,460 4,092 4,572 7,789
State intangible tax 639 579 1,917 1,733
FDIC assessments 1,048 1,103 3,292 3,307
Loss (gain) - other real estate owned (112) 196 (259) 1,089
Loss sharing expense 270 574 555 1,451
Other 5,029 8,073 17,151 19,535
Total noninterest expenses 51,105 52,992 151,238 149,846
Income before income taxes 32,975 27,875 96,543 82,179
Income tax expense 10,125 9,202 31,311 26,936
Net income $ 22,850 $ 18,673 $ 65,232 $ 55,243
Earnings per common share        
Basic $ 0.37 $ 0.31 $ 1.07 $ 0.90
Diluted 0.37 0.30 1.05 0.89
Cash dividends declared per share $ 0.16 $ 0.16 $ 0.48 $ 0.48
Average common shares outstanding - basic 61,280,283 61,135,749 61,170,845 61,088,794
Average common shares outstanding - diluted 62,086,067 61,987,795 61,962,961 61,858,724