Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities
Net loss	$ (6,570)	$ (40,932)
Loss from discontinued operations	(712)	(28,071)
Loss from continuing operations	(5,858)	(12,861)
Adjustments to reconcile net loss from continuing operations to net cash used in operating activities - continuing operations:
Depreciation	376	394
Amortization		1,789
Share-based compensation	531	1,081
Change in valuation of warrants, net	(6,924)	(8,204)
Asset impairments		1,365
Loss (gain) on sale of assets	(160)
Other		117
Deferred income tax benefit		(1,214)
Deferred interest on related party debt		406
Bad debt expense	165	357
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, net	1,868	(1,496)
Costs in excess of billings on uncompleted contracts	1,174	2,590
Inventory, net	1,737	(7)
Deferred costs on uncompleted contracts	991	(3,543)
Net investment in sales-type leases	(90)	(593)
Other current assets	(35)	(29)
Accounts payable	(6,324)	4,736
Accrued liabilities	(588)	(184)
Billings in excess of costs on uncompleted contracts	(536)	1,306
Deferred revenue and other current liabilities	(1,484)	347
Other liabilities	(77)	676
Net cash used in operating activities - continuing operations	(15,234)	(12,966)
Net cash provided by (used in) operating activities - discontinued operations	1,075	(18,333)
Net cash used in operating activities	(14,159)	(31,299)
Investing activities
Cash from acquired businesses		11,958
Purchase of property and equipment	(150)	(304)
Proceeds from sale of property and equipment	181	249
Net cash provided by investing activities	31	11,903
Financing activities
Principal borrowings on revolving line of credit	39,688	13,600
Principal payments on revolving line of credit	(41,316)	(8,834)
Principal payments on related party debt		(1,000)
Principal payments on debt		(2,000)
Proceeds from sale of common stock and warrant exercises, net of costs	15,050	6,813
Exercise of stock options		137
Net cash provided by financing activities	13,422	8,716
Net change in cash	(706)	(10,680)
Cash and cash equivalents at beginning of period	1,947	12,449
Cash and cash equivalents at end of period	1,241	1,769
Supplemental cash flow information
Income taxes paid	19	6
Interest paid	212	427
Non-cash items
Issuance of 567,731 shares of Class A common stock in conjunction with the acquisition of businesses		37,697
Change in common stock warrant liability in conjunction with exercise of 8,363 warrants		621
Common stock warrant liability recorded in conjunction with equity funding	12,246	$ 1,957
Issuance of Class A common stock to related party for conversion of subordinated debt and accrued interest	4,238
Consideration transferred to Elemental Energy LLC	1,244
Change in common stock warrant liability in conjunction with exercise/extinguishment of warrants	$ 7,262