New Markets Tax Credit Transaction (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 26, 2015
Variable Interest Entity [Line Items]
Percentage of qualifying investments on tax credits	39.00%
Aggregate principal amount	$ 13.7
Percentage of aggregate principal amount, leverage loan	1.00%
Maturity date	Oct. 17, 2041
Restricted cash	$ 9.0	$ 3.7
Percentage of recapture to the tax credits	100.00%
Compliance period	7 years
Wells Fargo [Member]
Variable Interest Entity [Line Items]
Contribution to investment fund	$ 6.6
MCTC Investment [Member]
Variable Interest Entity [Line Items]
Restricted cash	$ 6.6

This element represents the time period provided in the Internal Revenue Code.

No definition available.

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- Definition

Refers to the percentage of aggregate principal leverage loan amount to the investment fund.

+ References

No definition available.

+ Details

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- Definition

Represents the maximum percentage of qualified investments in the equity of community development entities that is available to taxpayers to claim as credits against their federal income taxes.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of recapture to which the tax credits are subject.

+ References

No definition available.

+ Details

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- Definition

The maturity date of the financial support arrangement.

+ References

No definition available.

+ Details

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- Definition

The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
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- Definition

The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (c)
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+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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