FAIR VALUE (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Carrying Amount [Member]
Financial Assets [Abstract]
Cash and cash equivalents	$ 26,742	$ 38,026
Prepaid expenses and other current assets	10,770	3,723
Financial Liabilities [Abstract]
Accrued expenses	10,713	16,692
Other short-term liabilities	73	26
Derivative qualifying cash flow hedge	666	877
Credit facility	16,757	17,212
Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	26,742	38,026
Prepaid expenses and other current assets	10,770	3,723
Financial Liabilities [Abstract]
Accrued expenses	10,713	16,692
Other short-term liabilities	73	26
Derivative qualifying cash flow hedge	666	877
Credit facility	15,222	15,487
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	26,742	38,026
Prepaid expenses and other current assets	0	0
Financial Liabilities [Abstract]
Accrued expenses	0	0
Other short-term liabilities	0	0
Derivative qualifying 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
Prepaid expenses and other current assets	10,770	3,723
Financial Liabilities [Abstract]
Accrued expenses	10,713	16,692
Other short-term liabilities	73	26
Derivative qualifying cash flow hedge	666	877
Credit facility	15,222	15,487
Significant Unobservable Inputs (Level 3) [Member] | Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents	0	0
Prepaid expenses and other current assets	0	0
Financial Liabilities [Abstract]
Accrued expenses	0	0
Other short-term liabilities	0	0
Derivative qualifying cash flow hedge	0	0
Credit facility	$ 0	$ 0