Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses Net Investment In Direct Financing Leases (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Receivables [Abstract] | ||
| Minimum lease payments receivable | $ 26,096 | $ 27,361 |
| Estimated unguaranteed residual values in leased property | 7,625 | 7,036 |
| Initial direct costs | 106 | 158 |
| Unearned lease and residual income | (2,876) | (3,462) |
| Investment in commercial direct financing leases | $ 30,951 | $ 31,093 |