INCOME TAXES - Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of the federal statutory tax rate to the Company's effective tax rate
Federal statutory tax rate - (benefit) / provision (as a percent)	35.00%	35.00%	35.00%
State and local income taxes (as a percent)	53.20%	4.00%	3.40%
Change in valuation allowance (as a percent)	(455.60%)	(0.20%)	(0.50%)
Domestic manufacturing deduction (as a percent)	206.90%	(2.80%)	(3.20%)
Research and development credit (as a percent)	14.30%	(0.20%)	(0.70%)
Change in uncertain tax positions (as a percent)	(54.60%)	3.60%	0.80%
Other (as a percent)	(2.10%)	0.40%	0.40%
Tax provision (as a percent)	(202.90%)	39.80%	35.20%