Condensed Consolidated Statements Of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net income (loss)	$ 5,508	$ 77,775	$ (5,634)	$ 101,977
Other comprehensive income (loss), net of tax where applicable:
Unrealized foreign currency translation gains (losses)	493	(190)	356	(885)
Change in fair value of available-for-sale investment	988	5	1,478	263
Unrealized gains (losses) on derivatives for the period	(22,190)	5,395	(4,401)	43,440
Gains reclassified from OCI into net income	(4,139)	(13,051)	(14,034)	(18,461)
Unrealized gains (losses) on derivatives	(26,329)	(7,656)	(18,435)	24,979
Actuarial gains for the period	185	0	296	4,940
Amortization included in penison cost, net of $6, $0, ($275) and $0, respectively, of income tax expense (benefit)	260	251	806	463
Defined benefit pension and severance plans	445	251	1,102	5,403
Other comprehensive income (loss), net of tax	(24,403)	(7,590)	(15,499)	29,760
Comprehensive income (loss)	$ (18,895)	$ 70,185	$ (21,133)	$ 131,737