Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) Segment BusinessActivity	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | Segment	1
Number of business activities | BusinessActivity	1
Bad debt expense	$ 1,998,000	$ 546,000	$ 172,000
Uncollectible receivables written off	$ 1,100,000	100,000	0
Property plant and equipment depreciation method	Straight-line basis
Intangible assets amortization method	Straight-line basis
Impairment of long-lived assets	$ 0	0	0
Goodwill impairment charges	0	0	0
Warranty accrual	$ 1,100,000	900,000
Percentage of lesser lease term than estimated economic life	75.00%
Percentage of minimum lease payments exceeds fair value under lease classification criteria	90.00%
Shipping and handling fees charged to customers	$ 2,600,000	2,400,000
Advertising costs	34,800,000	16,900,000	$ 7,700,000
Increase (decrease) in deferred tax assets current		(3,000,000)
Increase (decrease) in deferred tax liabilities		(3,000,000)
Solar materials purchases from top five suppliers	160,500,000	69,100,000
Impact of new accounting standards on balance sheet, reclassification of debt issuance cost	3,600,000
Guarantee Obligations
Summary Of Significant Accounting Policies [Line Items]
Performance guarantees included in accrued expenses and other liabilities	$ 300,000	$ 400,000
Inverters
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	10 years
Solar Energy Systems
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	20 years
Solar Energy Systems | Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	30 years