CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income (loss)	$ 17,959	$ 11,397
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization	3,869	4,321
Allowance for doubtful accounts	222	270
Stock-based compensation expense	7,067	6,702
Non-cash provision for restructuring	338	927
Non-cash interest expense	247	257
Loss (gain) on extinguishment of debt	0	2,579
Loss on disposal of fixed assets	548	0
Unrealized foreign currency transaction gains	(1,729)	(1,468)
Provision for (benefit from) deferred taxes	1,610	547
Changes in operating assets and liabilities:
Accounts receivable	22,945	19,599
Inventories	672	2,326
Prepaid expenses and other assets	(5,664)	(2,629)
Accounts payable	6,044	(48)
Accrued expenses, compensation and benefits and other liabilities	(16,105)	(14,942)
Income taxes payable	(776)	(16)
Deferred revenue and contract assets	(22,026)	(10,924)
Net cash provided by operating activities	15,221	18,898
Cash flows from investing activities:
Purchases of property and equipment	(7,359)	(2,275)
Net cash used in investing activities	(7,359)	(2,275)
Cash flows from financing activities:
Proceeds from revolving credit facility	19,000	0
Proceeds from long-term debt	0	180,000
Repayment of debt	(2,288)	(205,824)
Payments for repurchase of common stock	(25,262)	0
Proceeds from the issuance of common stock under employee stock plans	468	363
Common stock repurchases for tax withholdings for net settlement of equity awards	(10,885)	(14,038)
Prepayment penalty on extinguishment of debt	0	(1,169)
Payments for credit facility issuance costs	(440)	(2,574)
Net cash (used in) provided by financing activities	(19,407)	(43,242)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(941)	56
Net decrease in cash, cash equivalents and restricted cash	(12,486)	(26,563)
Cash, cash equivalents and restricted cash at beginning of period	60,556	83,638
Cash, cash equivalents and restricted cash at end of period	48,070	57,075
Supplemental information:
Cash and cash equivalents	44,332	53,337
Restricted cash	2,413	1,422
Restricted cash included in other long-term assets	1,325	2,316
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	48,070	57,075
Cash paid for income taxes	1,293	336
Cash paid for interest	$ 1,542	$ 1,308