NOTES RECEIVABLE - Schedule of Notes Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Note Balance per Balance Sheet, current	$ 1,767	$ 1,545
Notes receivable, non-current		1,493
Note Amount, current and non-current	2,000	3,500
Plus Accrued interest, current and non-current	26	45
Less Unamortized Note Discount, current and non-current	(259)	(507)
Note Balance per Balance Sheet, current and non-current	1,767	3,038
Notes Receivable - Laramide [Member]
Note Amount, current	2,000	1,500
Plus Accrued Interest, current	26	45
Less Unamortized Note Discount, current	(259)
Note Balance per Balance Sheet, current	$ 1,767	1,545
Note Amount, non-current		2,000
Less Unamortized Note Discount, non-current		(507)
Notes receivable, non-current		$ 1,493

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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