Deposits (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Deposit [Line Items]
2017	$ 265,792,000
2018	89,497,000
2019	54,453,000
2020	54,776,000
2021	32,260,000
Thereafter	13,364,000
Total certificates of deposit	510,142,000
FDIC Insurance Limit	250,000
Time Deposits, $250,000 or more	104,500,000	$ 136,600,000
Deposits from certain officers, directors, and their associated companies	14,400,000	15,700,000
Deposit Liabilities Reclassified as Loans Receivable	986,000	$ 663,000
Retail [Member]
Deposit [Line Items]
2017	230,853,000
2018	89,497,000
2019	54,453,000
2020	47,776,000
2021	32,260,000
Thereafter	13,364,000
Total certificates of deposit	468,203,000
Brokered [Member]
Deposit [Line Items]
2017	34,939,000
2020	7,000,000
Total certificates of deposit	$ 41,939,000