INCOME TAXES (Deferred Tax Asset Valuation Allowance Rollforward) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Balance, beginning of year	$ 43,380	$ 376,224	$ 391,629
Reversal of deferred tax asset valuation allowance to provision for income taxes	(7,957)	(319,142)	(643)
Increase (decrease) in deferred tax asset valuation allowance to provision for income taxes	118	(27,319)	(468)
Increase (decrease) in deferred tax asset valuation allowance to accumulated other comprehensive income	0	13,617	(14,294)
Balance, end of year	$ 35,541	$ 43,380	$ 376,224