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Loans, Allowance for Loan Losses and Credit Quality (Post-Modification balance of TDRs Listed by Type of Modifications) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Dec. 31, 2015
Post modification balance of Troubled Debt Restructuring |  |  |  |
EXTENDED MATURITY | $ 256 | $ 855 | $ 2,638 | $ 2,204
Financing Receivable Modifications Post Modification Recorded Investment Adjusted Interest Rate | 0 | 0 | 92 | 0
COMBINATION RATE & MATURITY | 730 | 246 | 990 | 2,769
COURT ORDERED CONCESSION | 387 | 36 | 1,253 | 66
TOTAL | $ 1,373 | $ 1,137 | $ 4,973 | $ 5,039

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