Goodwill and Other Intangible Assets, Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Carrying amount of intangible assets [Abstract]
Net Carrying Amount	$ 36,168
Amortization expenses	4,300	$ 4,100	$ 3,500
Amortization expense for intangible assets
2017	2,996
2018	2,735
2019	2,655
2020	2,458
2021	2,272
Thereafter	23,052
Net Carrying Amount	36,168
Customer Relationships [Member]
Carrying amount of intangible assets [Abstract]
Gross Carrying Amount	29,833	30,882
Accumulated Amortization	(2,845)	(1,488)
Net Carrying Amount	26,988	29,394
Amortization expense for intangible assets
Net Carrying Amount	26,988	29,394
Non-compete Agreements [Member]
Carrying amount of intangible assets [Abstract]
Gross Carrying Amount	5,926	6,534
Accumulated Amortization	(4,063)	(2,838)
Net Carrying Amount	1,863	3,696
Amortization expense for intangible assets
Net Carrying Amount	1,863	3,696
Patents and Technology [Member]
Carrying amount of intangible assets [Abstract]
Gross Carrying Amount	5,922	9,798
Accumulated Amortization	(1,179)	(5,323)
Net Carrying Amount	4,743	4,475
Amortization expense for intangible assets
Net Carrying Amount	4,743	4,475
Trade Names and Licenses [Member]
Carrying amount of intangible assets [Abstract]
Gross Carrying Amount	4,087	4,160
Accumulated Amortization	(1,032)	(574)
Net Carrying Amount	3,055	3,586
Amortization expense for intangible assets
Net Carrying Amount	3,055	3,586
Other [Member]
Carrying amount of intangible assets [Abstract]
Gross Carrying Amount	213	213
Accumulated Amortization	(694)	(728)
Net Carrying Amount	(481)	(515)
Amortization expense for intangible assets
Net Carrying Amount	(481)	(515)
Other Intangible Assets [Member]
Carrying amount of intangible assets [Abstract]
Gross Carrying Amount	45,981	51,587
Accumulated Amortization	(9,813)	(10,951)
Net Carrying Amount	36,168	40,636
Amortization expense for intangible assets
Net Carrying Amount	$ 36,168	$ 40,636