Post-modification balance of TDRs Listed by type of Modification(Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans, Allowance for Loan Losses and Credit Quality [Abstract]
Extended maturity	$ 2,936	$ 3,441	$ 3,582
Adjusted interest rate	0	727
Combination rate and maturity	2,199	2,640	8,917
Court ordered concession	977	837	690
Total	$ 6,112	$ 7,645	$ 13,189