FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended
	Feb. 28, 2021	Apr. 30, 2020	Dec. 31, 2020	Mar. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of contingent liability			$ 748	$ 1,748
Gigavation
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of contingent liability			700	700
Gigavation | Forecast
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of contingent liability	$ 700
Payments of contingent consideration	$ 700
Gigavation | Other Accrued Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of contingent liability			$ 700	700
Eastwind
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of contingent liability				$ 1,000
Payments of contingent consideration		$ 1,000