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ACQUISITION AND RELATED PARTY ITEMS - Fair Value of Assets and Liabilities at CVM Acquisition Date (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 05, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Purchase Price        
Consideration payable for CVM Acquisition   $ 0 $ 14,420 $ 0
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]        
Goodwill   $ 88,276 $ 36,204 $ 26,679
CVM        
Purchase Price        
Consideration payable for CVM Acquisition $ 14,420      
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]        
Cash and cash equivalents 1,226      
Accounts receivable 583      
Inventories 1,621      
Other current assets 1,186      
Property and equipment 345      
Other intangible assets 2,608      
Other non-current assets 460      
Total assets acquired 8,029      
Accounts payable (94)      
Accrued liabilities (471)      
Current portion of deferred revenue, and other (54)      
Deferred tax liability (683)      
Other long-term borrowings (1,109)      
Other liabilities (157)      
Net assets acqiured 5,461      
Goodwill 8,959      
Total fair value of consideration transferred $ 14,420