CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 6,012	$ 19,040	$ 1,662
Adjustment for pension and postretirement benefit liability, net of tax of ($219) in 2012, $1,560 in 2011 and $327 in 2010	349	(2,658)	(494)
Adjustment for interest rate swap, net of tax of ($30) in 2012 and $230 in 2011	47	(391)
Comprehensive income	$ 6,408	$ 15,991	$ 1,168