Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 399,464	$ 330,362
Accounts receivable and unbilled receivables, net of allowances of $5,766 and $5,153, respectively	273,899	299,469
Inventories	130,577	147,549
Prepaid expenses	23,514	27,070
Other current assets	53,907	77,362
Total current assets	881,361	881,812
Property and equipment, net	103,212	93,961
Long-term investment in sales-type leases, net	35,039	32,924
Operating lease right-of-use assets	27,698	38,052
Goodwill	735,523	734,274
Intangible assets, net	226,707	242,906
Long-term deferred tax assets	32,764	22,329
Prepaid commissions	54,777	59,483
Other long-term assets	96,791	105,017
Total assets	2,193,872	2,210,758
Current liabilities:
Accounts payable	47,192	63,389
Accrued compensation	52,475	73,455
Accrued liabilities	145,888	172,655
Deferred revenues, net	124,602	118,947
Total current liabilities	370,157	428,446
Long-term deferred revenues	48,750	37,385
Long-term deferred tax liabilities	1,511	2,095
Long-term operating lease liabilities	35,510	39,405
Other long-term liabilities	6,265	6,719
Convertible senior notes, net	568,114	566,571
Total liabilities	1,030,307	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; 55,488 and 55,030 shares issued; 45,205 and 44,747 shares outstanding, respectively	56	55
Treasury stock at cost, 10,283 shares outstanding, respectively	(290,319)	(290,319)
Additional paid-in capital	1,088,825	1,046,760
Retained earnings	379,179	390,728
Accumulated other comprehensive loss	(14,176)	(17,087)
Total stockholders’ equity	1,163,565	1,130,137
Total liabilities and stockholders’ equity	$ 2,193,872	$ 2,210,758