Condensed Consolidated Statement of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net loss	$ (8,758)	$ (20,360)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	306	429
Stock-based compensation	2,303	2,368
Remeasurement of warrant liabilities	189	(875)
Increase in accounts receivable	(2,820)	(800)
Decrease in other current assets	559	4,923
Increase in accounts payable	1,213	2,061
Decrease in deferred revenues	(232)	(1,160)
Decrease in accrued expenses and other current liabilities	(6,702)	(1,837)
Other	(95)	105
Net cash used in operating activities	(14,037)	(15,146)
Cash flows from investing activities:
Purchase of property and equipment	(9)	(88)
Proceeds from sale of property and equipment	28	0
Net cash provided by (used in) investing activities	19	(88)
Cash flows from financing activities:
Proceeds from exercise of stock options	621	2,063
Payments for employee taxes withheld related to vested stock-based awards	(65)	(558)
Net cash provided by financing activities	556	1,505
Net decrease in cash and cash equivalents	(13,462)	(13,729)
Cash and cash equivalents at the beginning of the period	138,545	198,256
Cash and cash equivalents at the end of the period	125,083	184,527
Supplemental cash flow data:
Cash paid during the period for interest	29	12
Cash paid during the period for income taxes	$ 168	$ 174