FEDERAL AND STATE CURRENT AND DEFERRED INCOME TAX Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal income tax provision at statutory rate	$ 10,902	$ 16,439	$ 758
Change in valuation allowance	(13,601)	(11,784)	(4,347)
State taxes, net of federal benefit	36	184	1,255
Nondeductible compensation	(530)	(1,567)	(1,370)
Equity in loss of unconsolidated affiliate	2,766	$ 816	$ 198
Research and development credit	2,248
Other	1,140	$ (574)	$ 309
Total income tax benefit (provision)	$ 2,961	$ 3,514	$ (3,197)