FAIR VALUE (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Carrying Amount [Member]
Financial Assets [Abstract]
Cash and cash equivalents	$ 21,064	$ 38,420
Restricted cash	6,399	7,362
Prepaid expenses and other current assets	2,434	2,710
Noncurrent restricted cash	20,252	15,259
Financial Liabilities [Abstract]
Accrued expenses	12,815	11,209
Other short term liabilities	653	686
Term loan	44,267	44,653
Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	21,064	38,420
Restricted cash	6,399	7,362
Prepaid expenses and other current assets	2,434	2,710
Noncurrent restricted cash	20,252	15,259
Financial Liabilities [Abstract]
Accrued expenses	12,815	11,209
Other short term liabilities	653	686
Term loan	40,687	36,795
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	21,064	38,420
Restricted cash	6,399	7,362
Prepaid expenses and other current assets	0	0
Noncurrent restricted cash	20,252	15,259
Financial Liabilities [Abstract]
Accrued expenses	0	0
Other short term liabilities	0	0
Term loan	0	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	2,434	2,710
Noncurrent restricted cash	0	0
Financial Liabilities [Abstract]
Accrued expenses	12,815	11,209
Other short term liabilities	653	686
Term loan	40,687	36,795
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	0
Financial Liabilities [Abstract]
Accrued expenses	0	0
Other short term liabilities	0	0
Term loan	$ 0	$ 0