CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
NET INCOME (LOSS)	$ 87,296	$ (265,400)	$ 86,148
OTHER COMPREHENSIVE INCOME (LOSS):
Change in pension benefit plans assets/liabilities	18,675	(1,697)	718
Foreign currency translation	(1,212)	608	(733)
Change in fair value of investments	(744)	396	352
Change in fair value of interest rate swap	948	(1,659)
Realized loss on sale of investments recorded in net income (loss)		3,224
Other comprehensive income before taxes	17,667	872	337
INCOME TAX EXPENSE (BENEFIT):
Tax adjustment on minimum pension liability	7,765	(87)	7,759
Foreign currency translation	(474)	226
Change in fair value of investments	(189)	158	153
Change in fair value of interest rate swap	370	(685)
Realized loss on sale of investments recorded in net income (loss)		1,219
Income tax expense	7,472	831	7,912
NET OTHER COMPREHENSIVE INCOME (LOSS)	10,195	41	(7,575)
TOTAL COMPREHENSIVE INCOME (LOSS)	$ 97,491	$ (265,359)	$ 78,573