CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2021	Mar. 31, 2020
Current assets:
Cash and cash equivalents	$ 572,787,000	$ 717,811,000
Restricted cash	8,900,000	14,815,000
Trade accounts receivable, net	114,284,000	92,761,000
Refundable income taxes	65,692,000	38,340,000
Other current assets	64,052,000	32,666,000
Total current assets	825,715,000	896,393,000
Property and equipment, net of accumulated depreciation and amortization	11,957,000	19,321,000
Intangible assets, net	39,730,000	45,200,000
Goodwill	357,446,000	297,796,000
Deferred commissions, net	22,619,000	16,014,000
Other assets, net	30,854,000	27,165,000
Total assets	1,288,321,000	1,301,889,000
Current liabilities:
Trade accounts payable	39,955,000	42,204,000
Accrued payroll and related expenses	46,438,000	28,791,000
Other accrued expenses	58,353,000	68,991,000
Acquisition escrow payable	8,900,000	14,815,000
Deferred revenue	11,603,000	6,581,000
Total current liabilities	165,249,000	161,382,000
Other liabilities	42,389,000	52,995,000
Commitments and contingencies
Stockholders' equity:
Preferred stock, $1.00 par value (authorized 1 million shares; issued 0 shares at March 31, 2021 and 2020, respectively)	0	0
Common stock, $0.10 par value (authorized 200 million shares; issued 147.8 million and 143.9 million shares at March 31, 2021 and 2020, respectively)	14,781,000	14,394,000
Additional paid-in capital	1,630,072,000	1,496,565,000
Retained earnings	1,454,826,000	1,545,094,000
Accumulated other comprehensive income	7,522,000	5,745,000
Treasury stock, at cost (79.6 million and 78.1 million shares at March 31, 2021 and 2020, respectively)	(2,026,518,000)	(1,974,286,000)
Total stockholders' equity	1,080,683,000	1,087,512,000
Total stockholders' equity	$ 1,288,321,000	$ 1,301,889,000