Business Combination - Additional Information (Detail)	0 Months Ended	3 Months Ended	0 Months Ended
	Feb. 16, 2015 CECEP [Member] USD ($)	Mar. 31, 2015 CECEP [Member] MWh Plant	Feb. 16, 2015 CECEP Solar Energy Hong Kong Co., Limited [Member] USD ($)	Feb. 16, 2015 CECEP Solar Energy Hong Kong Co., Limited [Member] EUR (€)	Feb. 16, 2015 CECEP Solar Energy Hong Kong Co., Limited [Member] USD ($)	Feb. 16, 2015 CECEP Solar Energy Hong Kong Co., Limited [Member] EUR (€)	Jan. 15, 2015 CECEP Solar Energy Hong Kong Co., Limited [Member]	Mar. 31, 2015 CECEP Solar Energy Hong Kong Co., Limited [Member] Other Current Liabilities [Member] USD ($)
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired							100.00%
Number of Photovoltaic Plants		4
Power Generating Capacity (in Megawatt-hours)		4.3
Payable settlement due to CECEP HK on behalf of CECEP					$ 8,967,000	€ 7,870,000
Payments to Acquire Businesses, Gross			3,561,000	3,125,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)			5,722,977	5,722,977
Business Combination Cash Paid and Accounts Payable Total			3,561,000	3,125,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities								2,283,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Accounts Payable to be Paid to Former Owner					8,269,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	194,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 42,000