Acquisitions - Assets and Liabilities Assumed (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Other current assets
Goodwill	$ 878,390		$ 849,609
Socrates and A-Check
Consideration
Cash	11,935	$ 11,935
Other current assets
Accounts receivable	4,276	4,279
Other current assets	1,252	805
Property and equipment	176	177
Intangible assets	30,873	32,141
Other long-term assets	6	6
Total assets acquired	48,518	49,343
Accounts payable and accrued expenses	1,250	1,156
Other current liabilities	1,219	1,291
Deferred tax liability	8,465	8,388
Other liabilities	2	2
Total liabilities assumed	10,936	10,837
Total identifiable net assets	37,582	38,506
Goodwill	28,570	27,352
Total consideration	66,152	$ 65,858
Purchase Price Adjustments
Accounts receivable	(3)
Other current assets	447
Property and equipment	(1)
Intangible assets	(1,268)
Total assets acquired	(825)
Accounts payable and accrued expenses	94
Other current liabilities	(72)
Deferred tax liability	77
Total liabilities assumed	99
Total identifiable net assets	(924)
Goodwill	1,218
Total consideration	$ 294