INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Gross deferred tax assets	$ 407,156	$ 405,266
Valuation allowance	(390,835)	(376,224)
Deferred tax assets, net of valuation allowance	16,321	29,042
Deferred tax liabilities	23,754	36,182
Net deferred tax liabilities	$ (7,433)	$ (7,140)