Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 340,413	$ 330,362
Accounts receivable and unbilled receivables, net of allowances of $5,373 and $5,153, respectively	322,073	299,469
Inventories	141,156	147,549
Prepaid expenses	27,963	27,070
Other current assets	103,364	77,362
Total current assets	934,969	881,812
Property and equipment, net	98,373	93,961
Long-term investment in sales-type leases, net	32,744	32,924
Operating lease right-of-use assets	28,228	38,052
Goodwill	734,895	734,274
Intangible assets, net	234,689	242,906
Long-term deferred tax assets	29,562	22,329
Prepaid commissions	56,909	59,483
Other long-term assets	100,469	105,017
Total assets	2,250,838	2,210,758
Current liabilities:
Accounts payable	63,407	63,389
Accrued compensation	48,284	73,455
Accrued liabilities	198,979	172,655
Deferred revenues, net	143,298	118,947
Total current liabilities	453,968	428,446
Long-term deferred revenues	42,438	37,385
Long-term deferred tax liabilities	1,558	2,095
Long-term operating lease liabilities	36,855	39,405
Other long-term liabilities	6,136	6,719
Convertible senior notes, net	567,342	566,571
Total liabilities	1,108,297	1,080,621
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; 55,352 and 55,030 shares issued; 45,069 and 44,747 shares outstanding, respectively	55	55
Treasury stock at cost, 10,283 shares outstanding, respectively	(290,319)	(290,319)
Additional paid-in capital	1,072,685	1,046,760
Retained earnings	375,728	390,728
Accumulated other comprehensive loss	(15,608)	(17,087)
Total stockholders’ equity	1,142,541	1,130,137
Total liabilities and stockholders’ equity	$ 2,250,838	$ 2,210,758