Employee Benefits and Stock Compensation - Summary of Stock Options Outstanding and Exercisable (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Shares granted	63,650	413,000	49,200
Equity Option [Member]
Options, Outstanding at January 1, 2015	492,997
Shares granted	63,650
Options, Exercised	0
Options, Forfeited	0
Options, Outstanding at December 31, 2015	556,647	492,997
Options, Exercisable at December 31, 2015	255,616
Weighted-Average Exercise Price, Outstanding at January 1, 2015	$ 18.72
Weighted-Average Exercise Price, Granted	12.63
Weighted-Average Exercise Price, Exercised	0
Weighted-Average Exercise Price, Forfeited	0
Weighted-Average Exercise Price, Outstanding at December 31, 2015	18.02	$ 18.72
Weighted-Average Exercise Price, Exercisable at December 31, 2015	$ 26.25
Weighted-Average Remaining Contractual Term, Outstanding	7 years 7 months 6 days	8 years 8 months 12 days
Weighted-Average Remaining Contractual Term, Exercisable at December 31, 2015	7 years 1 month 6 days
Aggregate Intrinsic Value, Outstanding at January 1, 2015	$ 1,311
Aggregate Intrinsic Value, Outstanding at December 31, 2015	2,099	$ 1,311
Aggregate Intrinsic Value, Exercisable at December 31, 2015	$ 912