INCOME TAXES INCOME TAXES - Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 164,105	$ 159,859
Reserves not currently deductible	7,367	7,919
Tax credit carryforwards	849	2,043
Depreciation	6,663	3,866
Deferred revenue	1,974	927
Other	611	770
Total deferred tax asset	181,569	175,384
Valuation allowance	(181,499)	(175,300)
Net deferred tax asset	70	84
Deferred tax liability	(49)	(562)
Net deferred tax asset (liability)	$ 21	$ (478)