FAIR VALUE (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	$ 6,200	$ 8,700
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	8,962	11,391
Cash and cash equivalents	8,636	4,633
Restricted cash	679	741
Long-term restricted cash	4,647	6,017
Total	13,962	11,391
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	8,962	11,391
Cash and cash equivalents	8,636	4,633
Restricted cash	679	741
Long-term restricted cash	4,647	6,017
Total	13,962	11,391
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