Mergers and Acquisitions - Additional Information (Detail) (USD $)	12 Months Ended		0 Months Ended					0 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Aug. 09, 2013 Syndicated Solar , Inc	Dec. 31, 2013 Syndicated Solar , Inc	Aug. 09, 2013 Syndicated Solar , Inc Single Vendor	Aug. 09, 2013 Syndicated Solar , Inc Contingent Earnout	Mar. 21, 2014 Syndicated Solar , Inc Subsequent Event	Aug. 09, 2013 Syndicated Solar , Inc Common Class A	Aug. 09, 2013 Syndicated Solar , Inc Common Class A Contingent Earnout	Jan. 14, 2014 Alteris Renewables Subsequent Event	Jan. 14, 2014 Alteris Renewables Common Class A Subsequent Event	Dec. 31, 2013 Acquisition-related Costs	Dec. 31, 2013 Sunetric , Inc
Business Acquisition [Line Items]
Acquisition consideration paid, net			$ 250,000
Business acquisition, shares issued	400,000							400,000	1,300,000		8,300,000
Business acquisition, value of shares issued	916,000	21,576,000	916,000							32,000,000
Accounts payable			2,220,000		1,600,000
Payments to vendors			1,000,000
Accrued liabilities			600,000	200,000			0
Monthly payment			100,000
Additional earn out payments						250,000
Percentage of voting interest for acquisition										100.00%			100.00%
Common stock closing market price, per share										$ 3.83
Acquisition related cost	$ 2,010,000	$ 2,393,000										$ 1,200,000
Purchase agreement date													Mar. 26, 2014