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ACQUISITIONS (Business Acquisition, Narrative) (Details) - Arkis - USD ($)	Jul. 29, 2019	Dec. 31, 2020
Business Acquisition [Line Items]
Purchase price of business combination	$ 30,600,000
Contingent consideration, liability	25,500,000
Contingent consideration, fair value	$ 13,100,000	$ 15,100,000
Acquired intangible assets, discount rate	14.50%
Accrued Expenses and Other Current Liabilities
Business Acquisition [Line Items]
Contingent consideration, fair value		3,400,000
Other Liabilities
Business Acquisition [Line Items]
Contingent consideration, fair value		$ 11,700,000
Milestone Payment One
Business Acquisition [Line Items]
Contingent consideration, liability	$ 10,000,000
Milestone Payment Two
Business Acquisition [Line Items]
Contingent consideration, liability	$ 15,500,000

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