Equity Award Plans - Summary of Stock-Based Compensation Expense Capitalized (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Inventories [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, amounts capitalized	$ 226	$ 192	$ 433
Other Assets [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, amounts capitalized	3,136	142
Property, Plant and Equipment - Net [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, amounts capitalized	2,997	5,340
Solar energy systems [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, amounts capitalized	$ 24,075	$ 17,700	$ 6,576