Subsequent Events - Additional Information (Detail) $ / shares in Units, $ in Thousands						1 Months Ended	3 Months Ended
	May. 04, 2015 USD ($) $ / shares shares	Apr. 17, 2015 USD ($) $ / shares shares	Apr. 15, 2015 USD ($) MWh	Mar. 26, 2015 USD ($) shares	Mar. 02, 2015 USD ($) shares	Apr. 30, 2015 USD ($) MWh	Mar. 31, 2015 USD ($) MWh $ / shares	Dec. 31, 2014 $ / shares
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues (in Shares) | shares				500,000	18,700,000
Common Stock, Par or Stated Value Per Share (in Dollars per share) | $ / shares							$ 0.0001	$ 0.0001
Proceeds from Issuance of Common Stock							$ 12,000
Jiangsu Solarbao Leasing Co. Ltd. [Member] | Xinyu Realforce Energy Co., Ltd. [Member]
Subsequent Event [Line Items]
Sales-leaseback, lease description							In April, 2015 Xinyu Realforce Energy Co., Ltd. (“Realforce”) entered into a sales-leaseback arrangements under which solar modules and other equipment related to the rooftop PV solar system of 5.25 MW sold to Jiangsu Solarbao Leasing Co. Ltd., at an amount of $5,646, a wholly owned subsidiary of the Company, and subsequently leased back by Realforce over lease term of 10 years at a fixed interest rate of 10% per annum. The sole shareholder pledged its 100% shares of Realforce to Jiangsu Solarbao to secure its obligations due to the Company.
Subsequent Event [Member] | Yes Yield Investments Limited [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues (in Shares) | shares	9,260,000
Common Stock, Par or Stated Value Per Share (in Dollars per share) | $ / shares	$ 0.0001
Stock Issued During Period, Value, New Issues	$ 25,002
Subsequent Event [Member] | Yes Yield Investments Limited [Member] | Option Agreement Not Exercised [Member]
Subsequent Event [Line Items]
Common Stock, Par or Stated Value Per Share (in Dollars per share) | $ / shares	$ 0.0001
Stock Issued During Period Shares Option Agreement (in Shares) | shares	9,260,000
Proceeds from Issuance of Common Stock	$ 25,002
Exercisable period	7 months
Subsequent Event [Member] | Jiangsu Solarbao Leasing Co. Ltd. [Member] | Xinyu Realforce Energy Co., Ltd. [Member]
Subsequent Event [Line Items]
Business Combination, Consideration Transferred						$ 5,646
Power Generating Capacity (in Megawatt-hours) | MWh						5.25
Sales-leaseback, lease term						10 years
Sales-leaseback, fixed interest rate						10.00%
Percentage of shares pledged to secure obligations						100.00%
Solar Juice Pty Ltd. [Member]
Subsequent Event [Line Items]
Business acquisition, percentage of voting interests acquired							80.00%
Business Combination, Consideration Transferred							$ 25,500
Aerojet [Member]
Subsequent Event [Line Items]
Business acquisition, percentage of voting interests acquired							100.00%
Power Generating Capacity (in Megawatt-hours) | MWh							6.02
ZBB Energy Corporation [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Business Combination, Consideration Transferred		$ 33,390
ZBB Energy Corporation [Member] | Subsequent Event [Member] | Series C Convertible Preferred Stock [Member]
Subsequent Event [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) | shares		28,048
Share Price (in Dollars per share) | $ / shares		$ 0.6678
ZBB Energy Corporation [Member] | Subsequent Event [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) | shares		8,000,000
Share Price (in Dollars per share) | $ / shares		$ 0.6678
SPI Solar Japan GK [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Business acquisition, percentage of voting interests acquired			100.00%
Business Combination, Consideration Transferred			$ 8,800
Power Generating Capacity (in Megawatt-hours) | MWh			30
Payments to Acquire Businesses, Gross			$ 3,300
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable			$ 5,500