LEASE OBLIGATIONS - Maturity of remaining lease liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating Leases
2020		$ 1,643
2021	$ 1,741	1,527
2022	1,574	1,359
2023	1,058	844
2024	846	631
2025	666
Thereafter	480	981
Total lease payments	6,365	6,985
Less: Interest	(334)	(467)
Present value of lease liabilities	6,031	6,518
Finance Leases
2021	193	0
2022	220	0
2023	220	0
2024	220	0
2025	220
Thereafter	1,460	0
Total lease payments	2,533	0
Less: Interest	(252)	0
Present value of lease liabilities	$ 2,281	$ 0