Employee Benefits and Stock Compensation - Summary of Restricted Stock (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Shares granted		243,391	63,650	413,000
Weighted-average grant date fair value		$ 3.41	$ 2.21	$ 2.26
Restricted Stock [Member]
Shares granted		300,787	250,934	27,692
Weighted-average grant date fair value		$ 14.90	$ 13.42	$ 10.19
Fair value of awards vested	[1]	$ 2,827	$ 836	$ 1,455

[1] Based on grant date fair value