Deposits (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Scheduled maturities of time deposits [Abstract]
2016	$ 617,713,000
2017	98,689,000
2018	60,326,000
2019	31,278,000
2020	25,041,000
Thereafter	3,807,000
Time deposits, Total	836,853,761	$ 690,049,795
Time Deposits, $250,000 or greater	257,500,000	279,500,000
Deposit accounts in overdraft status	$ 1,854,000	$ 1,542,000