Income Taxes - Schedule of Reconciliation of Statutory Income Taxes and Effective Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income before taxes	$ 10,599	$ 15,475	$ 5,731	$ 6,529	$ 8,345	$ 4,803	$ 5,117	$ 4,567	$ 5,151	$ 4,789	$ 2,361	$ 2,520	$ 38,334	$ 22,832	$ 14,821
Federal statutory income tax, amount													13,417	7,991	5,070
State tax, net of Federal benefit, amount													2,510	1,536	1,009
Windfall benefit – exercise of stock options, amount													1,025
DCB Asset Pool payout, amount															154
Other items, net, amount													129	(73)	194
Total	$ 4,082	$ 5,800	$ 2,407	$ 2,742	$ 3,297	$ 2,041	$ 2,175	$ 1,941	$ 2,145	$ 2,130	$ 1,094	$ 1,058	$ 15,031	$ 9,454	$ 6,427
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory income tax rate													35.00%	35.00%	34.20%
State tax, net of Federal benefit, rate													6.55%	6.73%	6.81%
Windfall benefit – exercise of stock options, rate													(2.67%)
DCB Asset Pool payout, rate															1.04%
Other items, net, rate													0.34%	(0.32%)	1.31%
Effective income tax rate													39.22%	41.41%	43.36%