Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities
Net loss	$ (11,053)	$ (4,942)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,662	258
Foreign currency remeasurement loss (gain)	194	(71)
Provision for doubtful accounts	(9)	(393)
Stock-based compensation	8,274	3,289
(Gain) loss on disposal of property and equipment	(12)	1
Deferred income taxes	(9)	0
Change in value of earn-out and warrant liabilities	(3,252)	0
Changes in operating assets and liabilities:
Accounts receivable and long-term unbilled receivables	9,248	6,224
Prepaid expenses and other current assets	205	(379)
Deferred contract costs and other assets	(2,090)	(969)
Accounts payable, accrued expenses and other liabilities	(11,725)	(7,462)
Deferred revenue	2,444	179
Net cash used in operating activities	(6,123)	(4,265)
Investing activities
Maturities of investments	861	0
Purchases of investments	(179,890)	(268)
Acquisition of I-Access, net of cash acquired	(1,473)	0
Purchase of property and equipment	(969)	(266)
Net cash used in investing activities	(181,471)	(534)
Financing activities
Payments of transaction fees	0	(1,255)
Purchase of common stock	(744)	0
Proceeds from stock option exercises	1,036	1,126
Proceeds from sale of common shares of subsidiary	0	753
Repayments of finance leases	(5)	(7)
Net cash provided by financing activities	287	617
Effect of exchange rates on cash	(2,146)	(365)
Net decrease in cash and cash equivalents	(189,453)	(4,547)
Cash and cash equivalents at beginning of period	268,217	69,112
Cash and cash equivalents at end of period	78,764	64,565
Supplemental disclosures of cash flow information
Income taxes paid	335	304
Noncash acquisition of I-Access	$ 5,636	$ 0