Balance Sheet Components - Summary of Balance Sheet Components (Details) - USD ($) $ in Thousands	Aug. 31, 2015	Dec. 28, 2014
Cash grants and rebates receivable
Cash grants and rebates receivable		$ 1,216
Prepaid expense and other current assets
Reimbursable network upgrade costs	$ 5,783
Other current assets	2,080
Prepaid expense and other current assets	7,863
Property and equipment, net
Property and equipment, gross	486,196	165,114
Less: accumulated depreciation	(10,133)	(6,906)
Total	476,063	158,208
Other long-term assets
Reimbursable network upgrade costs	23,134
Solar Energy Systems Utility
Property and equipment, net
Property and equipment, gross	56,497
Leased Solar Energy Systems
Property and equipment, net
Property and equipment, gross	81,206	80,678
Construction in Progress
Property and equipment, net
Property and equipment, gross	$ 348,493	$ 84,436