Loans and Leases - Narrative (Details)
|
12 Months Ended |
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2017
USD ($)
banking_office
|
Dec. 31, 2017
USD ($)
subsidiary_bank
|
Dec. 31, 2017
USD ($)
subsidiary_trust
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
|
| Initial rate below the fully indexed rate, percent (less than) |
|
0.01%
|
|
|
|
|
|
| Sale of residential mortgage loans |
$ 4,600,000
|
|
|
|
|
$ 3,900,000
|
$ 3,200,000
|
| Net gains on sale of residential mortgage loans |
50,000
|
|
|
|
|
95,000
|
54,000
|
| Mortgage servicing assets added during the period |
38,000
|
|
|
|
|
21,000
|
18,000
|
| Amortization of mortgage servicing assets |
122,000
|
|
|
|
|
157,000
|
146,000
|
| Residential mortgage loans serviced |
104,100,000
|
|
|
|
|
115,300,000
|
|
| Mortgage servicing rights, amortized cost |
667,000
|
$ 667,000
|
$ 667,000
|
$ 667,000
|
$ 667,000
|
800,000
|
|
| Mortgage servicing rights (MSR) impairment |
0
|
|
|
|
|
0
|
|
| Loans held for sale |
280,000
|
280,000
|
280,000
|
280,000
|
280,000
|
0
|
|
| Residential mortgage loans used to secure advances from FHLB |
475,000,000
|
475,000,000
|
$ 475,000,000
|
$ 475,000,000
|
$ 475,000,000
|
365,000,000
|
|
| Number of subsidiary banks |
|
|
4
|
3
|
4
|
|
|
| Interest income on nonaccrual loans |
1,000,000
|
|
|
|
|
$ 1,000,000
|
$ 1,200,000
|
| Loans and leases receivable, impaired, commitments to lend to nonperforming loans |
$ 0
|
$ 0
|
$ 0
|
$ 0
|
$ 0
|
|
|
| Tompkins, Cayuga, Cortland and Schuyler Counties, New York |
|
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
|
| Number of banking offices | banking_office |
|
|
14
|
|
|
|
|
| Genesee Valley Region, New York State |
|
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
|
| Number of banking offices | banking_office |
|
|
17
|
|
|
|
|
| Putman County, New York |
|
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
|
| Number of banking offices | banking_office |
|
|
5
|
|
|
|
|
| Dutchess County, New York |
|
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
|
| Number of banking offices | banking_office |
|
|
3
|
|
|
|
|
| Westchcester County, New York |
|
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
|
| Number of banking offices | banking_office |
|
|
6
|
|
|
|
|
| Southeastern Pennsylvania |
|
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
|
| Number of banking offices | banking_office |
|
|
20
|
|
|
|
|
| LTV 80 to 100 Percent |
|
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
|
| Loan to value - fixed rate loans (percent) |
80.00%
|
80.00%
|
80.00%
|
80.00%
|
80.00%
|
|
|
| Loan to value - adjusted rate loans (percent) |
85.00%
|
85.00%
|
85.00%
|
85.00%
|
85.00%
|
|
|
| Loan to value - private mortgage insurance (percent) |
78.00%
|
78.00%
|
78.00%
|
78.00%
|
78.00%
|
|
|