UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (6,551)	$ (9,424)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	2,393	2,645
Provision for doubtful accounts	364	251
Share-based compensation	770	2,395
Change in fair value of warrant and derivative liabilities	(4,698)	0
Amortization of deferred financing costs	97	113
Interest expense related to debt discount accretion and conversion feature	921	1,466
Warrants issued for settlement of debt	0	653
Gain on settlement of rental agreement	0	(469)
Changes in operating assets and liabilities:
Accounts receivable, net	(1,536)	421
Prepaid expenses and other current assets	1,449	2,553
Accounts payable and customer deposits	(2,571)	(920)
Net billings in excess of revenues and deferred revenue	(37)	(193)
Accrued expenses and other payables	2,521	(2,537)
Net cash used in operating activities	(6,878)	(3,046)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, equipment, and software development	(929)	(1,898)
Net cash used in investing activities	(929)	(1,898)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of loans	(226)	(239)
Financing related fees	(151)	(223)
Proceeds from issuance of Redeemable Preferred Stock	0	4,194
Payment of dividends on Redeemable Preferred Stock	(5)	0
Proceeds from issuance of Junior Convertible Note	2,000	0
Net cash provided by financing activities	1,618	3,732
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(8)	(69)
Decrease in cash, cash equivalents, and restricted cash	(6,197)	(1,281)
Cash, cash equivalents, and restricted cash, beginning of period	14,754	5,902
Cash, cash equivalents, and restricted cash, end of period	$ 8,557	$ 4,621