Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating activities:
Net income (loss)	$ (3,225)	$ 2,045
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	2,497	644
Non-cash lease expense	307	244
Restructuring costs		6
Provision for doubtful accounts and other adjustments to accounts receivable	(3)	(4)
Provision for excess and obsolete inventory	(97)
Stock based compensation	1,016	632
Changes in operating accounts:
Accounts receivable	4,018	(983)
Prepaid expenses and other assets	381	215
Accounts payable and accrued liabilities	(649)	(840)
Deferred revenue	(545)	302
Net cash provided by operating activities	3,700	2,261
Investing activities:
Capital expenditures	(190)	(771)
Other investing activities	11	(215)
Net cash used in investing activities	(179)	(13,136)
Financing activities:
Proceeds from common stock offering, net of offering expenses	59,898
Proceeds from exercise of common stock warrants	40	2,045
Other financing activities	34	18
Net cash provided by financing activities	59,972	2,063
Net increase (decrease) in cash and cash equivalents	63,493	(8,812)
Cash and cash equivalents, beginning of period	25,754	28,268
Cash and cash equivalents, end of period	89,247	19,456
Supplemental disclosures of cash flow information:
Cash paid for income taxes	$ 23	19
Circle Operator [Member]
Investing activities:
Acquisition of Smart Retail business and Circle operator business, net		$ (12,150)