FAIR VALUE ACCOUNTING (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets:
Long term debt	$ 49,500	$ 49,200
Recurring
Assets:
Investments	1,885	3,131
Recurring | Level 1
Assets:
Investments	1,885	2,718
Recurring | Level 2
Assets:
Investments		413
Marketable equity securities. | Recurring
Assets:
Investments	1,885	2,718
Marketable equity securities. | Recurring | Level 1
Assets:
Investments	$ 1,885	2,718
Warrants | Recurring
Assets:
Investments		413
Warrants | Recurring | Level 2
Assets:
Investments		$ 413