FAIR VALUE (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Carrying Amount [Member]
Financial Assets [Abstract]
Cash and cash equivalents	$ 38,420	$ 12,299
Restricted cash	7,362	30,000
Prepaid expenses and other current assets	2,566	3,937
Noncurrent restricted cash	15,259
Financial Liabilities [Abstract]
Accrued expenses	10,999	13,865
Other short-term liabilities	686	780
Term loan	44,653
Credit agreement		30,000
Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	38,420	12,299
Restricted cash	7,362	30,000
Prepaid expenses and other current assets	2,566	3,937
Noncurrent restricted cash	15,259
Financial Liabilities [Abstract]
Accrued expenses	10,999	13,865
Other short-term liabilities	686	780
Term loan	36,795
Credit agreement		30,000
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	38,420	12,299
Restricted cash	7,362	30,000
Prepaid expenses and other current assets	0	0
Noncurrent restricted cash	15,259
Financial Liabilities [Abstract]
Accrued expenses	0	0
Other short-term liabilities	0	0
Term loan	0
Credit agreement		0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	0	0
Restricted cash	0	0
Prepaid expenses and other current assets	2,566	3,937
Noncurrent restricted cash	0
Financial Liabilities [Abstract]
Accrued expenses	10,999	13,865
Other short-term liabilities	686	780
Term loan	36,795
Credit agreement		30,000
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	0	0
Restricted cash	0	0
Prepaid expenses and other current assets	0	0
Noncurrent restricted cash	0
Financial Liabilities [Abstract]
Accrued expenses	0	0
Other short-term liabilities	0	0
Term loan	$ 0
Credit agreement		$ 0