Condensed Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest in Subsidiary [Member]
Beginning balance at Mar. 31, 2020	$ 2,050,142	$ 6	$ 1,788,456	$ 245,373	$ (6,048)	$ 22,355
Beginning balance, shares at Mar. 31, 2020		62,147,140
Issuance of stock under Employee Stock Purchase Plan	9,206		9,206
Issuance of stock under Employee Stock Purchase Plan, shares		282,269
Common stock issued in private placement, net of issuance costs	174,749	$ 1	174,748
Common stock issued in private placement, net of issuance costs, shares		4,474,559
Stock-based compensation	50,456		50,456
Shares issued in settlement of certain accrued employee compensation liabilities	25,406		25,406
Shares issued in settlement of certain accrued employee compensation liabilities, shares		580,846
RSU awards vesting, net of shares withheld for taxes which have been retired	(747)		(747)
RSU awards vesting, net of shares withheld for taxes which have been retired, shares		48,055
Net (loss) income	(5,136)			(10,426)		5,290
Other comprehensive income (loss), net of tax	3,615				3,615
Ending balance at Sep. 30, 2020	2,307,691	$ 7	2,047,525	234,947	(2,433)	27,645
Ending balance, shares at Sep. 30, 2020		67,532,869
Beginning balance at Jun. 30, 2020	2,099,183	$ 6	1,846,827	232,984	(6,851)	26,217
Beginning balance, shares at Jun. 30, 2020		63,026,001
Common stock issued in private placement, net of issuance costs	174,749	$ 1	174,748
Common stock issued in private placement, net of issuance costs, shares		4,474,559
Stock-based compensation	26,296		26,296
RSU awards vesting, net of shares withheld for taxes which have been retired	(346)		(346)
RSU awards vesting, net of shares withheld for taxes which have been retired, shares		32,309
Net (loss) income	3,391			1,963		1,428
Other comprehensive income (loss), net of tax	4,418				4,418
Ending balance at Sep. 30, 2020	2,307,691	$ 7	2,047,525	234,947	(2,433)	27,645
Ending balance, shares at Sep. 30, 2020		67,532,869
Beginning balance at Mar. 31, 2021	2,387,234	$ 7	2,092,595	249,064	9,803	35,765
Beginning balance, shares at Mar. 31, 2021		68,529,133
Exercise of stock options	70		70
Exercise of stock options, shares		2,257
Issuance of stock under Employee Stock Purchase Plan	8,706		8,706
Issuance of stock under Employee Stock Purchase Plan, shares		313,700
Stock-based compensation	51,070		51,070
Shares issued in settlement of certain accrued employee compensation liabilities	24,488		24,488
Shares issued in settlement of certain accrued employee compensation liabilities, shares		457,130
RSU awards vesting, net of shares withheld for taxes which have been retired	(1,742)		(1,742)
RSU awards vesting, net of shares withheld for taxes which have been retired, shares		95,669
Shares issued in connection with acquisition of business	207,169		207,169
Shares issued in connection with acquisition of business, shares		4,000,189
Other	(11)					(11)
Net (loss) income	23,162			20,259		2,903
Other comprehensive income (loss), net of tax	(26,676)				(26,676)
Ending balance at Sep. 30, 2021	2,673,470	$ 7	2,382,356	269,323	(16,873)	38,657
Ending balance, shares at Sep. 30, 2021		73,398,078
Beginning balance at Jun. 30, 2021	2,657,010	$ 7	2,360,023	266,032	(5,939)	36,887
Beginning balance, shares at Jun. 30, 2021		73,320,854
Exercise of stock options	59		59
Exercise of stock options, shares		1,894
Stock-based compensation	23,558		23,558
RSU awards vesting, net of shares withheld for taxes which have been retired	(1,284)		(1,284)
RSU awards vesting, net of shares withheld for taxes which have been retired, shares		75,330
Other	(89)					(89)
Net (loss) income	5,150			3,291		1,859
Other comprehensive income (loss), net of tax	(10,934)				(10,934)
Ending balance at Sep. 30, 2021	$ 2,673,470	$ 7	$ 2,382,356	$ 269,323	$ (16,873)	$ 38,657
Ending balance, shares at Sep. 30, 2021		73,398,078