CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net loss	$ (1,448)	$ (1,060)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	177	132
Stock-based compensation	197	83
Changes in assets and liabilities:
Accounts receivable	(587)	548
Unbilled receivables	(253)	90
Prepaid expenses and other current assets	51	(84)
Long-term tax receivable		(146)
Accounts payable	10	28
Accrued expenses	(229)	80
Deferred revenue	(389)	(220)
Net cash used in operating activities	(2,471)	(549)
Cash flows from investing activities:
Purchases of property and equipment		(286)
Net cash used in investing activities		(286)
Cash flows from financing activities:
Payments made for taxes of employees who surrendered shares related to unrestricted stock	(54)	(50)
Net cash used in financing activities	(54)	(50)
Decrease in cash and cash equivalents	(2,525)	(885)
Cash and cash equivalents, beginning of period	38,565	47,742
Cash and cash equivalents, end of period	$ 36,040	$ 46,857