CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net loss	$ (1,473)	$ (2,974)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	316	417
Bad debt expense	9	14
Amortization of debt discount, net of gain on extinguishment	0	104
Stock-based compensation	53	159
Impairment charges	453	2,175
Changes in operating assets and liabilities:
Accounts receivable	(112)	(268)
Prepaid expenses and other current assets	73	168
Other assets	50	0
Accounts payable	86	(34)
Accrued expenses and other liabilities	(423)	(450)
Net cash used in operating activities	(968)	(689)
Cash flows from investing activities:
Purchases of property and equipment	(17)	(222)
Net cash used in investing activities	(17)	(222)
Cash flows from financing activities:
Principal payments under borrowing arrangements	0	(1,832)
Proceeds from Series C Preferred Stock issuance, net of expenses of $223	0	1,527
Purchase of treasury stock	(35)	(52)
Net cash used in financing activities	(35)	(357)
Decrease in cash and cash equivalents	(1,020)	(1,268)
Cash at beginning of period	2,007	3,946
Cash at end of period	987	2,678
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	0	318
Non-cash investing and financing activities:
Accrued preferred stock dividends	19	6
Issuance of common stock for vested restricted stock units	$ 382	$ 0