Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ 13,739	$ 10,557	$ (4,297)
Other comprehensive income (loss):
Net unrealized gain on interest rate swap agreement			38
Adjustment to defined benefit plan, net of tax	(21)	50	130
Other, net of tax			(17)
Comprehensive income (loss)	$ 13,718	$ 10,607	$ (4,146)