Goodwill and Other Intangible Assets - Goodwill RollForward (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013
Goodwill [Line Items]
Amortization of Intangible Assets	$ 19,700,000	$ 13,000,000	$ 5,100,000
Impairment of Intangible Assets, Finite-lived	0	4,700,000	0
Goodwill, Impairment Loss	0	(147,365,000)	0	$ 0	$ 0
Loss on equity method investment in connection with acquisition	0	90,946,000	0
Adjustments to goodwill		(370,000)
Goodwill [Roll Forward]
Goodwill, beginning of period		58,135,000
Goodwill arising from business combinations		89,600,000
Goodwill, end of period	0		58,135,000
Business Combination, Consideration Transferred		251,032,000
Commercial [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss		33,260,000
Adjustments to goodwill		(370,000)
Goodwill [Roll Forward]
Goodwill, beginning of period		10,314,000
Goodwill arising from business combinations		23,316,000
Goodwill, end of period	0		10,314,000
Residential leases [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss		49,951,000
Adjustments to goodwill		0
Goodwill [Roll Forward]
Goodwill, beginning of period		32,180,000
Goodwill arising from business combinations		17,771,000
Goodwill, end of period	0		32,180,000
Power Plant [Member]
Goodwill [Line Items]
Goodwill, Impairment Loss		64,154,000
Adjustments to goodwill		0
Goodwill [Roll Forward]
Goodwill, beginning of period		15,641,000
Goodwill arising from business combinations		$ 48,513,000
Goodwill, end of period	$ 0		$ 15,641,000