Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022
Current assets:
Cash and cash equivalents	$ 332,502	$ 636,161
Marketable securities	42,144	67,037
Accounts receivable and unbilled costs, net of allowance for doubtful accounts of $1,614 and $1,649 at June 30, 2022 and March 31, 2022, respectively	112,889	148,245
Inventories and deferred costs	22,840	28,220
Prepaid income taxes	21,271	9,349
Prepaid expenses and other current assets	31,749	32,927
Total current assets	563,395	921,939
Fixed assets, net	40,328	41,337
Operating lease right-of-use assets	52,473	54,996
Goodwill	1,726,200	1,723,156
Intangible assets, net	414,950	433,419
Deferred income taxes	6,646	6,883
Other assets	12,643	12,979
Total assets	2,816,635	3,194,709
Current liabilities:
Accounts payable	19,848	21,959
Accrued compensation	51,000	75,788
Accrued other	33,194	32,064
Income taxes payable	2,924	4,353
Deferred revenue and customer deposits	297,243	330,585
Current portion of operating lease liabilities	10,985	11,411
Total current liabilities	415,194	476,160
Other long-term liabilities	7,642	7,470
Deferred tax liability	75,192	78,899
Accrued long-term retirement benefits	33,688	34,737
Long-term deferred revenue and customer deposits	126,621	133,121
Operating lease liabilities, net of current portion	51,409	53,927
Long-term debt	200,000	350,000
Total liabilities	909,746	1,134,314
Commitments and contingencies (Note 13)
Preferred stock, $0.001 par value:
5,000,000 shares authorized; no shares issued or outstanding at June 30, 2022 and March 31, 2022	0	0
Common stock, $0.001 par value:
300,000,000 shares authorized; 127,371,813 and 126,425,383 shares issued and 71,483,821 and 74,102,293 shares outstanding at June 30, 2022 and March 31, 2022, respectively	127	126
Additional paid-in capital	2,993,163	3,023,403
Accumulated other comprehensive income (loss)	(147)	141
Treasury stock at cost, 55,887,992 and 52,323,090 shares at June 30, 2022 and March 31, 2022, respectively	(1,489,687)	(1,373,840)
Retained earnings	403,433	410,565
Total stockholders' equity	1,906,889	2,060,395
Total liabilities and stockholders' equity	$ 2,816,635	$ 3,194,709