Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income (loss)	$ 2,767	$ (7,134)
Net income from discontinued operations	11,917	210
Net loss from continuing operations	(9,150)	(7,344)
Adjustments to reconcile net income (loss) to net cash used in operating activities from continuing operations:
Depreciation and amortization	98	217
Non-cash interest expense	56	282
Stock-based compensation expense	903	1,427
Warrant liabilities revaluation	588	(5,063)
Loss on debt extinguishment	422	0
Other financing expenses	0	461
Changes in operating assets and liabilities from continuing operations:
Prepaid expenses and other current assets	(39)	257
Other assets	25	18
Accounts payable	(425)	105
Accrued expenses	(583)	(1,103)
Accrued compensation	54	(318)
Deferred compensation	0	(135)
Other liabilities	(22)	15
Net cash used in operating activities from continuing operations	(8,073)	(11,181)
Cash flows from investing activities from continuing operations:
Release of restricted cash	0	280
Purchase of fixed assets, net	0	(18)
Net cash provided by investing activities from continuing operations	0	262
Cash flows from financing activities from continuing operations:
Issuance of common stock and warrants	10,733	14,785
Issuance costs related to common stock and warrants	(1,235)	(641)
Repayment of capital lease obligations	0	(5)
Repayment of notes payable	(7,129)	(2,311)
Net cash provided by financing activities from continuing operations	2,369	11,828
Cash flows from discontinued operations:
Net cash provided by operating activities of discontinued operations	80	818
Net cash provided by investing activities of discontinued operations	12,000	0
Net cash provided by discontinued operations	12,080	818
Net increase in cash	6,376	1,727
Cash, beginning of period	2,087	3,887
Cash, end of period	8,463	5,614
Supplemental disclosure of cash flow information:
Cash paid for interest	92	508
Non-cash investing and financing activities:
Issuance of restricted stock	0	249
Accrued transaction costs for financing activities	(131)	(259)
Issuance of placement agent warrants	287	103
Reclassification of warrant liabilities to equity	$ 798	$ 0