CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net earnings (loss)	$ 11,881,000	$ (118,702,000)	$ (33,833,000)
Earnings from discontinued operations, net of tax	(1,790,000)	(5,404,000)	0
Non-cash operating activities:
Depreciation and amortization	11,508,000	20,787,000	24,248,000
Loss on disposal or impairment of assets	1,219,000	4,137,000	183,000
Gain on sale of strategic investments	0	(194,000)	0
Lease-related impairment and restructuring charges	1,769,000	27,545,000	0
Gain on distribution from retained profits interest	0	0	(30,235,000)
Provision for doubtful accounts	2,254,000	1,776,000	4,217,000
Impairment of goodwill	2,875,000	0	0
Deferred income taxes	(458,000)	115,000	(1,540,000)
Non-cash stock compensation expense	71,304,000	125,800,000	87,257,000
Changes in operating assets and liabilities:
Accounts receivable, net	(32,336,000)	(12,123,000)	(38,611,000)
Deferred commissions	(11,113,000)	(6,436,000)	(7,975,000)
Other assets	9,426,000	7,705,000	26,863,000
Accounts payable and other liabilities	8,508,000	(15,369,000)	8,850,000
Income taxes	22,275,000	596,000	33,969,000
Deferred revenue	8,334,000	4,208,000	4,684,000
Net cash provided by operating activities	105,656,000	34,441,000	78,077,000
Cash flows from investing activities:
Capital expenditures	(4,255,000)	(4,696,000)	(4,499,000)
Cash paid in acquisitions, net of cash received	(170,281,000)	0	(19,107,000)
Distribution from retained profits interest	0	0	31,184,000
Purchases of investments	(48,894,000)	(28,197,000)	0
Proceeds from sales of investments	50,750,000	3,000,000	0
Purchases of strategic investments	(1,000,000)	(500,000)	0
Proceeds from sale of strategic investment	0	1,394,000	0
Net cash provided by (used in) investing activities	(173,680,000)	(28,999,000)	7,578,000
Cash flows from financing activities:
Proceeds related to the issuance of common stock under stock and employee benefit plans	7,222,000	6,259,000	6,266,000
Shares repurchased for tax withholdings upon vesting of stock-based awards	(5,835,000)	(2,272,000)	(14,626,000)
Acquisition of treasury stock	(60,502,000)	(149,997,000)	(58,621,000)
Net cash used in financing activities	(59,115,000)	(146,010,000)	(66,981,000)
Net cash provided by (used in) continuing operations	(127,139,000)	(140,568,000)	18,674,000
Cash flows from discontinued operations:
From operating activities	1,790,000	5,404,000	0
Net cash provided by discontinued operations	1,790,000	5,404,000	0
Effect of exchange rate changes on cash	372,000	(550,000)	(199,000)
Net change in cash and cash equivalents	(124,977,000)	(135,714,000)	18,475,000
Cash and cash equivalents at beginning of period	464,448,000	600,162,000	581,687,000
Cash and cash equivalents at end of period	339,471,000	464,448,000	600,162,000
Supplemental cash flow information:
Cash paid (received) for income taxes, net - continuing operations	2,465,000	5,801,000	(32,916,000)
Cash (received) for income taxes - discontinued operations	(2,765,000)	(8,332,000)	0
Cash paid for operating lease liabilities	10,293,000	8,243,000	10,108,000
Operating lease assets obtained in exchange for operating lease liabilities	11,825,000	69,000	56,182,000
Operating lease assets, and related lease liabilities, relinquished in lease terminations	(4,486,000)	(6,781,000)	0
Purchases of property, plant and equipment remaining unpaid at period end	$ 104,000	$ 47,000	$ 696,000