CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net loss	$ (34,299)	$ (53,716)
Adjustments to reconcile net loss to net cash used in operating activities:
Loss on sale of property and equipment	0	179
Depreciation and amortization	3,409	1,874
Stock-based compensation expenses	21,956	17,827
Amortization of deferred contract acquisition and fulfillment costs	8,774	7,883
Non-cash interest income, net	(705)	(51)
Gain on foreign exchange	(439)	0
Changes in operating assets and liabilities:
Decrease (increase) in trade receivables	6,921	(5,761)
Increase in prepaid expenses and other current assets and other assets, noncurrent	(193)	(697)
Increase in deferred contract acquisition and fulfillment costs	(4,853)	(8,715)
Increase (decrease) in trade payables	(5,575)	98
Increase (decrease) in accrued expenses and other current liabilities	91	(3,600)
Increase in employees and payroll accruals	(2,504)	(2,195)
Increase (decrease) in other liabilities, noncurrent	411	(33)
Increase (decrease) in deferred revenue	(1,285)	6,145
Operating lease right-of-use assets and lease liabilities, net	(1,613)	(220)
Net cash used in operating activities	(9,904)	(40,982)
Cash flows from investing activities:
Investment in available-for-sale marketable securities	(33,609)	(47,447)
Proceeds from sales and maturities of available-for-sale marketable securities	38,976	5,670
Purchases of property and equipment	(1,792)	(1,004)
Capitalized internal-use software	(1,493)	(4,573)
Investment in restricted bank deposit	(1,001)	(1,850)
Net cash provided by (used in) investing activities	1,081	(49,204)
Cash flows from financing activities:
Repayment of long-term loans	(4,500)	(2,250)
Principal payments on finance leases	0	(135)
Proceeds from exercise of stock options	1,224	2,445
Payment of debt issuance costs	0	(125)
Net cash used in financing activities	(3,276)	(65)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	439	0
Net decrease in cash, cash equivalents and restricted cash	(11,660)	(90,251)
Cash, cash equivalents and restricted cash at the beginning of the period	45,833	144,371
Cash, cash equivalents and restricted cash at the end of the period	34,173	54,120
Supplemental disclosure of non-cash activity:
Purchase of property, equipment, internal-use software, and intangible asset in credit	699	141
Lease liabilities arising from right-of-use assets	0	23,712
Capitalized stock-based compensation cost	552	247
Supplemental disclosure of cash flow information
Cash paid for income taxes, net	3,182	7,687
Cash paid for interest	2,242	1,429
Reconciliation of cash, cash equivalents, and restricted cash to the consolidated balance sheet
Cash and cash equivalents	34,073	52,638
Restricted cash included in other assets, noncurrent	100	1,482
Total cash, cash equivalents, and restricted cash	$ 34,173	$ 54,120