Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Net income (loss)	$ (15,000)	$ 8,213
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	21,974	21,124
Loss on disposal of property and equipment	802	0
Share-based compensation expense	14,042	16,208
Deferred income taxes	(7,770)	(4,858)
Amortization of operating lease right-of-use assets	2,248	3,307
Impairment and abandonment of operating lease right-of-use assets related to facilities	7,815	1,753
Amortization of debt issuance costs	1,045	1,038
Changes in operating assets and liabilities:
Accounts receivable and unbilled receivables	(22,156)	(49,994)
Inventories	6,760	(17,320)
Prepaid expenses	(873)	(1,712)
Other current assets	34	7,950
Investment in sales-type leases	613	(1,097)
Prepaid commissions	2,574	4,152
Other long-term assets	628	2,240
Accounts payable	20	312
Accrued compensation	(25,171)	(23,859)
Accrued liabilities	(689)	769
Deferred revenues	29,135	19,786
Operating lease liabilities	(2,678)	(3,521)
Other long-term liabilities	(583)	(487)
Net cash provided by (used in) operating activities	12,770	(15,996)
Investing Activities
External-use software development costs	(3,499)	(3,852)
Purchases of property and equipment	(10,141)	(11,489)
Business acquisition, net of cash acquired	0	(3,392)
Net cash used in investing activities	(13,640)	(18,733)
Financing Activities
Proceeds from issuances under stock-based compensation plans	12,114	18,951
Employees’ taxes paid related to restricted stock units	(1,369)	(4,322)
Change in customer funds, net	(6,883)	5,462
Stock repurchases	0	(52,210)
Net cash provided by (used in) financing activities	3,862	(32,119)
Effect of exchange rate changes on cash and cash equivalents	176	(411)
Net increase (decrease) in cash, cash equivalents, and restricted cash	3,168	(67,259)
Cash, cash equivalents, and restricted cash at beginning of period	352,835	355,620
Cash, cash equivalents, and restricted cash at end of period	356,003	288,361
Reconciliation of cash, cash equivalents, and restricted cash to the Condensed Consolidated Balance Sheets:
Cash and cash equivalents	340,413	265,008
Restricted cash included in other current assets	15,590	23,353
Cash, cash equivalents, and restricted cash at end of period	356,003	288,361
Supplemental disclosure of non-cash investing activities
Unpaid purchases of property and equipment	$ 1,321	$ 703