CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Condensed Consolidated Statements of Comprehensive Income
Net income	$ 5,426	$ 10,600	$ 15,636
Other comprehensive income
Mark to market of interest rate hedges, net of tax expenses of $0 and $83, respectively, for the three-month periods, and $241 and $245, respectively, for the nine-month periods	145	422	430
Minimum pension liability adjustments, net of tax expenses of $344 for the 2015 nine-month period and $0 for each of the other periods		602
Total other comprehensive income	145	1,024	430
Comprehensive income	$ 5,571	$ 11,624	$ 16,066