Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized (Gain) Loss Arising During Period, Tax	$ (597)	$ 39	$ (38)
Tax effect of Amortization of Net Loss Recognized in Net Periodic Benefit Cost	(32)	(26)	(41)
Tax effect of amortization of prior service cost recognized in net periodic benefit cost	(8)	(5)	(7)
Other Comprehensive Income (Loss), Finalization of Pension and Non-Pension Postretirement Plan Valuation, Tax	$ 173	$ (30)	$ 0