LEASES - Lease payments and Maturities of lease liabilities (Details) - USD ($)	Dec. 31, 2019	Jan. 01, 2019
Undiscounted cash payments:
2020	$ 159,000
2021	161,000
2022	162,000
2023	93,000
Total lease payments	575,000
Less imputed interest	(82,000)
Lease liability	493,000	$ 599,596
Centennial, Colorado
Undiscounted cash payments:
2020	600,000
2021	600,000
2022	600,000
2023	600,000
Total lease payments	$ 600,000