CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net loss	$ (1,285)	$ (668)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	232	459
Bad debt expense	5
Bad debt (recovery)		(4)
Amortization of debt discount, net of gain on extinguishment	104	18
Stock-based compensation	50	164
Impairment charges	650	0
Deferred tax provision	0	27
Changes in assets and liabilities:
Accounts receivable	(80)	(2)
Prepaid expenses and other current assets	19	(60)
Accounts payable	(28)	83
Accrued expenses and other liabilities	(127)	56
Accrued sales taxes and regulatory fees	(12)	(55)
Net cash provided by (used in) operating activities	(472)	18
Cash flows from investing activities:
Purchases of property and equipment	(48)	(36)
Net cash used in investing activities	(48)	(36)
Cash flows from financing activities:
Principal payments under borrowing arrangements	(1,832)	0
Proceeds from Series C Preferred Stock issuance, net of expenses of $223	1,527	0
Purchase of treasury stock	(53)	(12)
Net cash used in financing activities	(358)	(12)
Decrease in cash and cash equivalents	(878)	(30)
Cash at beginning of period	3,946	1,140
Cash at end of period	3,068	1,110
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	316	266
Non-cash investing and financing activities:
Accrued preferred stock dividends	$ 3	$ 3