DISCONTINUED OPERATIONS - Components of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Operating activities:
Bad debt expense	$ 0	$ 110
Discontinued Operations, Disposed of by Sale \| CMQR
Operating activities:
Depreciation and amortization	0	1,218
Share-based compensation expense	0	167
Investing activities:
Purchases of property, plant and equipment	$ 0	$ 2,978

Investing Activities, Discontinued Operations, Noncash, Purchases of Property, Plant, and Equipment

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Operating Activities, Discontinued Operations, Bad Debt Expense

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Operating Activities, Discontinued Operations, Investing Activities

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Operating Activities, Discontinued Operations, Noncash, Depreciation and Amortization

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Operating Activities, Discontinued Operations, Noncash, Share-Based Compensation

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Operating Activities, Discontinued Operations, Operating Activities

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