Permanent Differences Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Tax benefit of loss carryforwards	$ 51,920	$ 63,910
Tax basis in excess of book basis	22,519	17,065
Foreign tax credits and other accruals	30,926	27,164
Capital losses	4,779	2,433
Deferred tax assets before valuation allowance	110,144	110,572
Valuation allowance	(106,226)	(102,796)
Deferred tax assets, net	3,918	7,776
Deferred tax assets - current	2,517	3,029
Deferred tax assets - long-term	1,401	4,747
Deferred tax liabilities - current	(337)	0
Deferred tax liabilities - long-term	(225,195)	(186,799)
Deferred tax liabilities, net	(225,532)	(186,799)
Net Deferred Tax Liabilities	$ (221,614)	$ (179,023)