THE COMPANY AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)	Mar. 31, 2022 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of reportable segments | segment	1
Revenue	$ 187,620	$ 148,327
Allowance for credit losses	695	383
Accumulated deficit	(745,809)		$ (766,438)
Additional paid-in capital	895,602		956,599
Service
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue	179,161	$ 137,796
Revision of Prior Period, Error Correction, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Out of period adjustments amount	3,300
Allowance for credit losses	1,200
Decrease in contract assets	2,100
Reduction in reserves	1,200
Revision of Prior Period, Error Correction, Adjustment | Service
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue	$ 2,100
Revision of Prior Period, Accounting Standards Update, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit			46,700
Additional paid-in capital			92,800
Senior notes			$ 46,200