Employee Benefits - Stock Appreciation Rigthts Plan (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	May. 18, 2007	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Jul. 28, 2014
Employee Benefits
Stock-based compensation expense				$ 570	$ 1,208
SAR Plan
Employee Benefits
Number of units authorized for issuance	200,000
Term of awards	10 years
Units outstanding		103,000		103,000		134,000
Stock-based compensation expense			$ 925		$ 942
Stock-based compensation exepense, reversal		$ 231		$ 125
2014 Option Plan
Employee Benefits
Number of units authorized for issuance							1,273,838