Annual report pursuant to Section 13 and 15(d)

Common Stock Transactions - Additional Information (Detail)

Common Stock Transactions - Additional Information (Detail)								12 Months Ended
	Feb. 16, 2016	Aug. 05, 2015 USD ($) shares	May. 11, 2015 shares	Dec. 01, 2014 USD ($) $ / shares shares	Apr. 21, 2014 shares	Apr. 09, 2013 shares	Sep. 09, 2005 $ / shares shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares	Dec. 31, 2013 USD ($) shares
Schedule of Capitalization, Equity [Line Items]
Common stock, outstanding								159,645,000	129,714,000
Business acquisition, number of shares issued								2,929,669	8,035,826
Common stock, shares authorized			200,000,000					200,000,000	200,000,000
Common stock, shares issued				8,000,000
Offering price of common stock \| $ / shares				$ 1.25
Issuance of common stock, net of issuance fees \| $				$ 8,600,000				$ 8,960,000	$ 8,614,000	$ 4,950,000
Convertible stock, Conversion of preferred stock				36,300,171
Preferred stock, shares outstanding								0	0
Subsequent Event
Schedule of Capitalization, Equity [Line Items]
Reverse stock split	0.1
Maximum
Schedule of Capitalization, Equity [Line Items]
Reverse stock split			0.25
Minimum
Schedule of Capitalization, Equity [Line Items]
Reverse stock split			0.1429
Scenario, Previously Reported
Schedule of Capitalization, Equity [Line Items]
Common stock, shares authorized			150,000,000
Kingstone Warrants
Schedule of Capitalization, Equity [Line Items]
Warrants expiration period							10 years
Warrants issued							289,187
Warrants exercise price \| $ / shares							$ 4.30
Energy Source
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock for acquisition \| $								$ 9,702,000
Business acquisition, number of shares issued		8,695,652
Business acquisition, number of shares issued value \| $		$ 10,000,000
Common Stock
Schedule of Capitalization, Equity [Line Items]
Common stock, outstanding								159,600,000
Common stock, shares issued								8,696,000	8,000,000	4,348,000
Common Stock \| Energy Source
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock for acquisition (in shares)		8,800,000						8,820,000
Issuance of common stock for acquisition \| $		$ 9,700,000						$ 9,000
Business acquisition, number of shares issued value \| $		$ 9,500,000
RVL One Limited Liability Company
Schedule of Capitalization, Equity [Line Items]
Common stock, outstanding								84,200,000
Common stock share outstanding owned								52.80%
Issuance of common stock, net of issuance fees \| $										$ 192,000
Aston Capital Limited Liability Company \| Restricted Stock
Schedule of Capitalization, Equity [Line Items]
Restricted common stock agreed to be issued for services						500,000
Restricted common stock agreed to be issued for services, vesting period						3 years
Restricted common stock agreed to be issued for services, vesting date						Sep. 25, 2013
Number of shares authorized for grant					300,000
Stock awards vesting periods					3 years