FAIR VALUE (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Carrying Amount [Member]
Financial Assets [Abstract]
Cash and cash equivalents	$ 38,026	$ 23,644
Restricted cash		15,000
Prepaid expenses and other current assets	3,723	4,190
Financial Liabilities [Abstract]
Accrued expenses	16,692	7,869
Other short term liabilities	26	199
Derivative qualifying as cash flow hedge	703	174
Credit facility	17,212	34,028
Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	38,026	23,644
Restricted cash		15,000
Prepaid expenses and other current assets	3,723	4,190
Financial Liabilities [Abstract]
Accrued expenses	16,692	7,869
Other short term liabilities	26	199
Derivative qualifying as cash flow hedge	703	174
Credit facility	15,487	34,028
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	38,026	23,644
Restricted cash		15,000
Prepaid expenses and other current assets	0	0
Financial Liabilities [Abstract]
Accrued expenses	0	0
Other short term liabilities	0	0
Derivative qualifying as cash flow hedge	0	0
Credit facility	0	0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	0	0
Restricted cash		0
Prepaid expenses and other current assets	3,723	4,190
Financial Liabilities [Abstract]
Accrued expenses	16,692	7,869
Other short term liabilities	26	199
Derivative qualifying as cash flow hedge	703	174
Credit facility	15,487	34,028
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	0	0
Restricted cash		0
Prepaid expenses and other current assets	0	0
Financial Liabilities [Abstract]
Accrued expenses	0	0
Other short term liabilities	0	0
Derivative qualifying as cash flow hedge	0	0
Credit facility	$ 0	$ 0