Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 01, 2017	Dec. 25, 2015	Dec. 26, 2014	Dec. 27, 2013
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of the year	$ 5,160	$ 5,902	$ 7,603	$ 5,710
Charged to expense	8,171	7,132	11,815
Release of allowance or Write-offs	(8,913)	(8,833)	(9,922)
Balance, end of the year	5,160	5,902	7,603
Allowance for Receivable from Insurance Provider [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of the year	4,019	3,874	3,933	5,652
Charged to expense	207	48	0
Release of allowance or Write-offs	(62)	(107)	(1,719)
Balance, end of the year	4,019	3,874	3,933
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of the year	2,266	3,227	2,844	$ 844
Charged to expense	579	383	(68)
Release of allowance or Write-offs	(1,540)	0	0
Acquisition	0	0	2,068
Balance, end of the year	$ 2,266	$ 3,227	$ 2,844

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses.

+ References

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- Definition

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