LEASES - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating lease expense	$ 1,229	$ 1,595	$ 2,364	$ 3,199
Short-term lease expense	160	672	450	1,732
Variable lease expense	264	605	1,104	897
Lease expense from continuing operations	1,653	2,872	3,918	5,828
Finance lease expense	0	79	0	158
Operating lease expense	0	925	0	1,850
Lease expense from discontinued operations	0	1,004	0	2,008
Total lease expense	$ 1,653	$ 3,876	$ 3,918	$ 7,836