TDR's and Other Pertinent Information (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Summary of Troubled Debt Restructurings and other pertinent information
TDRs on accrual status	$ 32,849	$ 38,382
TDRs on nonaccrual status	5,225	5,248
Total TDRs	38,074	43,630
Amount of specific reserves included in the allowance for loan loss associated with TDRs:	1,628	2,004
Additional commitments to lend to a borrower who has been a party to a TDR:	$ 972	$ 1,400