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
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Post modification balance of Troubled Debt Restructuring
Financing Receivable Modifications Post Modification Recorded Investment Adjusted Interest Rate	$ 0	$ 0	$ 150	$ 0
Financing Receivable Modifications Post Modification Recorded Investment Combination Of Rate And Maturity	0	237	0	237
COURT ORDERED CONCESSION	0	74	75	695
EXTENDED MATURITY	453	617	606	1,062
TOTAL	$ 453	$ 928	$ 831	$ 1,994