Summary of Significant Accounting Policies and Procedures - Summary of MyPower Deferred Cost Activity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Balance - beginning of the period	$ 13,571
MyPower systems delivered under executed contracts	215,141	$ 13,614
Recognized in cost of revenue within solar energy systems and components sales	(10,490)	(43)
Recognized in operating expenses	(446)
Balance - end of the period	$ 217,776	$ 13,571