FAIR VALUE (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	$ 5,300	$ 6,200
Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds – Fidelity, US		5,000
Interest bearing deposits – various banks	6,385	8,962
Cash and cash equivalents	2,137	8,636
Restricted cash	680	679
Long-term restricted cash	3,568	4,647
Total	6,385	13,962
Recurring Basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds – Fidelity, US		5,000
Interest bearing deposits – various banks	6,385	8,962
Cash and cash equivalents	2,137	8,636
Restricted cash	680	679
Long-term restricted cash	3,568	4,647
Total	6,385	13,962
Recurring Basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds – Fidelity, US		0
Interest bearing deposits – various banks	0	0
Cash and cash equivalents	0	0
Restricted cash	0	0
Long-term restricted cash	0	0
Total	0	0
Recurring Basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds – Fidelity, US		0
Interest bearing deposits – various banks	0	0
Cash and cash equivalents	0	0
Restricted cash	0	0
Long-term restricted cash	0	0
Total	$ 0	$ 0