CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME [Abstract]
Net (loss) income	$ (37,186)	$ 17,540	$ 69,731
Other comprehensive (loss) income
Employee pension plan adjustments, net of taxes of $25, $1,321 and $102 for the years ended December 31, 2012, 2011 and 2010 respectively	(60)	(1,968)	153
Comprehensive (loss) income	$ (37,246)	$ 15,572	$ 69,884