Defined Contribution Plan, Accumulated Benefit Obligation

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- Definition

Defined Contribution Plan, Contribution by Employer

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No definition available.

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- Definition

Defined Contribution Plan, Fair Value of Plan Assets

+ References

No definition available.

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- Definition

Number of days vested of the termination of the option holders employment.

+ References

No definition available.

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- Definition

Forfeiture rate.

+ References

No definition available.

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- Definition

Percentage of share vest upon change of control.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award award vesting percentage.

+ References

No definition available.

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- Definition

Share value accretion rate.

+ References

No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- 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.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 2
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- Definition

Number of share options (or share units) exercised during the current period.

+ 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(29))
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Stock-based Compensation and Employee Benefit Plans (Details) - USD ($)	12 Months Ended
	Dec. 27, 2016	Dec. 29, 2015	Dec. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Days after date of separation upon which option is forfeited	30 days
Options exercised by management (in shares)	0
Granted (in shares)	0
Contributions by the company	$ 1,000,000	$ 1,000,000	$ 200,000
POWR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accumulated benefit obligation	1,800,000	1,100,000	$ 0
Rabbi Trust
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Investments held within rabbi trust	$ 17,000,000	$ 15,600,000
Series 1 Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price per share of common stock investment (in dollars per share)	$ 100.00	$ 129.50
Percentage of share value accretes at a rate	9.00%
Series 2 Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price per share of common stock investment (in dollars per share)	$ 250.00
Series 3 Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price per share of common stock investment (in dollars per share)	$ 100
Options exercised by management (in shares)	1,000
Percentage of forfeiture rate	100.00%
2011 Stock option plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized number of shares to be granted (in shares)	287,930
Expiration date of options issued	10 years
Number of shares of common stock available for future grant (in shares)	18,566
2011 Stock option plan \| Series 1 Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of options granted that will vest	79.00%
Vesting period subject to the achievement of certain performance targets	4 years
2011 Stock option plan \| Series 2 Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of options	20.00%
2011 Stock option plan \| Series 3 Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of options	1.00%