Income Taxes (Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Deferred tax assets:
Tax attributes carryforward	$ 43,846	$ 36,700
Future tax deduction from Swiss Tax Ruling	49,755	0
Accruals	77,181	85,786
Depreciation and amortization	121	707
Tax step-up of goodwill from TRAF	105,942	100,514
Share-based compensation	13,718	11,093
Gross deferred tax assets	290,563	234,800
Valuation allowance	(35,536)	(30,766)
Deferred tax assets after valuation allowance	255,027	204,034
Deferred tax liabilities:
Acquired intangible assets and other	(30,901)	(34,848)
Deferred tax liabilities	(30,901)	(34,848)
Deferred tax assets, net	$ 224,126	$ 169,186