Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 47,725	$ 29,021	$ 44,280	$ 7,915
Other comprehensive income:
Cumulative translation adjustments	84	1,482	51	3,375
Changes in market value of investments:
Changes in unrealized gains (losses), net of tax benefit of $0, ($5), ($2) and ($38), respectively	0	(15)	(5)	(122)
Total net change in market value of investments	0	(15)	(5)	(122)
Changes in market value of derivatives:
Changes in market value of derivatives, net of taxes of $7, $40, $38 and $101, respectively	23	132	120	319
Reclassification adjustment for net gains (losses) included in net income, net of taxes (benefit) of $9,($24), ($7) and ($47), respectively	29	(79)	(21)	(150)
Total net change in market value of derivatives	52	53	99	169
Other comprehensive income	136	1,520	145	3,422
Total comprehensive income	$ 47,861	$ 30,541	$ 44,425	$ 11,337