Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities:
Net income (loss)	$ 3,484	$ (4,558)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	681	407
Non-cash lease expense	481
Amortization of debt discounts and financing issuance costs		131
Restructuring costs	115
Provision for doubtful accounts and other adjustments to accounts receivable	8	(3)
Provision for excess and obsolete inventory	1	(10)
Loss on disposal of fixed assets	6
Stock based compensation	788	410
Change in fair value of warrant liability		2,224
Gain on sale of software product	(483)
Change in operating accounts:
Accounts receivable	(5,842)	(1,034)
Prepaid expenses and other assets	(138)	(190)
Accounts payable and accrued liabilities	(526)	(351)
Deferred revenue	(136)	188
Net cash used in operating activities	(1,561)	(2,786)
Investing activities:
Acquisition of Smart Retail business, net	(3,974)
Proceeds from sale of software product	350
Capital expenditures	(287)	(110)
Net cash used in investing activities	(3,911)	(110)
Financing activities:
Proceeds from stock sale for employee stock purchase plan	5	3
Proceeds from (payments related to) the issuance of common stock	(14)	10,759
Repayments of short-term secured promissory notes		(1,000)
Dividends paid on preferred stock	(67)	(326)
Net cash provided by (used in) financing activities	(76)	9,436
Net increase (decrease) in cash and cash equivalents	(5,548)	6,540
Cash and cash equivalents, beginning of period	12,159	2,205
Cash and cash equivalents, end of period	6,611	8,745
Supplemental disclosures of cash flow information:
Cash paid for income taxes	17	10
Cash paid for interest expense		219
Supplemental disclosures of non-cash activities:
Issuance of common stock in connection with Smart Retail acquisition	$ 5,129
Issuance of common stock warrants in connection with stock offering		$ 6,780