CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
OPERATING ACTIVITIES
Net income	$ 146,373	$ 150,187
Reconciliation of net income to net cash (used in) provided by operating activities:
Depreciation, amortization, and accretion	23,018	19,931
Amortization on cloud computing arrangements	1,001	767
Bad debt expense (benefit)	4,444	(10)
Deferred tax expense (benefit)	788	(3,239)
Stock-based compensation	10,550	11,792
Loss on disposal of long-lived assets	24	23
Impairment of operating lease and other long-lived assets	1,068	0
Changes in operating assets and liabilities:
Trade accounts receivable, net	(136,430)	(154,633)
Inventories	(418,247)	(358,028)
Prepaid expenses and other current assets	(22,791)	(10,942)
Income tax receivable	(6,134)	(7,505)
Net operating lease assets and lease liabilities	(4,057)	5,947
Other assets	2,308	(28,387)
Trade accounts payable	157,155	256,028
Other accrued expenses	(14,688)	(37,673)
Income tax payable	26,915	(19,729)
Other long-term liabilities	(8,143)	2,797
Net cash used in operating activities	(236,846)	(172,674)
INVESTING ACTIVITIES
Purchases of property and equipment	(24,254)	(26,719)
Net cash used in investing activities	(24,254)	(26,719)
FINANCING ACTIVITIES
Proceeds from issuance of stock	1,046	914
Proceeds from exercise of stock options	1,830	69
Repurchases of common stock	(150,240)	(135,973)
Cash paid for shares withheld for taxes	(5,102)	(9,280)
Net cash used in financing activities	(152,466)	(144,270)
Effect of foreign currency exchange rates on cash and cash equivalents	(10,702)	513
Net change in cash and cash equivalents	(424,268)	(343,150)
Cash and cash equivalents at beginning of period	843,527	1,089,361
Cash and cash equivalents at end of period	419,259	746,211
Cash paid during the period
Income taxes, net of refunds of $1,124 and $71, as of September 30, 2022, and 2021, respectively	29,242	74,312
Interest	901	936
Operating leases	17,589	28,470
Non-cash investing activities
Change in accounts payable and other accrued expenses for purchases of property and equipment	(2,516)	5,959
Accrued for asset retirement obligation assets related to leasehold improvements	803	3,505
Leasehold improvements acquired through tenant allowances	$ 0	$ 4,061