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Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Note 15. Related Party Transactions An individual who serves as one of the Company’s directors has direct and indirect ownership interests in Enphase Energy, Inc. (“Enphase”). For the three months ended September 30, 2016 and 2015, the Company recorded $4.3 million and $3.3 million, respectively, and $18.7 million and $8.2 million for the nine months ended September 30, 2016 and 2015, respectively, in purchases from Enphase and had outstanding payables to Enphase of $2.7 million and $0.7 million as of September 30, 2016 and December 31, 2015, respectively. An individual who serves as one of the Company’s directors is also a director of Aquion, Inc. For the three and nine months ended September 30, 2016, the Company recorded $0.1 and $0.3 million, respectively, in purchases from Aquion, Inc. and had a de minimis amount of outstanding payables as of September 30, 2016. Prior to January 1, 2016, the Company did not make purchases from Aquion, Inc.