COMMITMENTS AND CONTINGENCIES - Summary of lease obligations (Details) $ in Thousands	Mar. 31, 2020 USD ($)
Operating leases
2020 - remaining	$ 5,560
2021	3,546
2022	2,610
2023	1,922
2024	537
Thereafter	1,481
Total	15,656
Less interest	(1,738)
Total discounted lease payments	13,918
Finance Leases
2020 - remaining	327
2021	298
2022	110
2023	9
Total	744
Less interest	(39)
Total discounted lease payments	$ 705