Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 266,402	$ 349,051
Accounts receivable and unbilled receivables, net of allowances of $5,012 and $5,272, respectively	354,098	240,894
Inventories	147,096	119,924
Prepaid expenses	24,862	22,499
Other current assets	56,674	48,334
Total current assets	849,132	780,702
Property and equipment, net	88,356	71,141
Long-term investment in sales-type leases, net	33,807	18,391
Operating lease right-of-use assets	44,133	48,549
Goodwill	731,294	738,900
Intangible assets, net	251,004	277,616
Long-term deferred tax assets	16,619	15,883
Prepaid commissions	54,994	63,795
Other long-term assets	110,346	127,519
Total assets	2,179,685	2,142,496
Current liabilities:
Accounts payable	73,517	71,513
Accrued compensation	42,799	71,130
Accrued liabilities	146,440	133,167
Deferred revenues, net	113,925	112,196
Convertible senior notes, net	0	488,152
Total current liabilities	376,681	876,158
Long-term deferred revenues	34,519	20,194
Long-term deferred tax liabilities	16,140	51,705
Long-term operating lease liabilities	41,862	39,911
Other long-term liabilities	9,285	7,839
Convertible senior notes, net	565,803	0
Total liabilities	1,044,290	995,807
Commitments and contingencies (Note 13)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued	0	0
Common stock, $0.001 par value, 100,000 shares authorized; 54,929 and 54,073 shares issued; 44,646 and 44,179 shares outstanding, respectively	55	54
Treasury stock at cost, 10,283 and 9,894 shares outstanding, respectively	(290,319)	(238,109)
Additional paid-in capital	1,030,665	1,024,580
Retained earnings	419,136	368,571
Accumulated other comprehensive loss	(24,142)	(8,407)
Total stockholders’ equity	1,135,395	1,146,689
Total liabilities and stockholders’ equity	$ 2,179,685	$ 2,142,496