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Represents the additional shares awarded based on performance-based adjustments.

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No definition available.

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- Definition

The number of grants initially made to executive officers and directors during the period (prior to additional performance-based awards) on other than stock (or unit) option plans.

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No definition available.

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- Definition

The number of vested or expected to vest equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

No definition available.

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- Definition

The weighted-average fair value at grant date for vested and expected to vest equity-based awards on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

No definition available.

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- Definition

Represents the period of growth in earnings per share considered to calculate percentage of shares vested.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of performance-based shares that ultimately vests, depending upon the fiscal year earnings per share growth rates of the reporting entity.

+ References

No definition available.

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- Definition

Represents the percentage of performance-based shares that ultimately vests, depending upon the total shareholder return over the vesting period.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of base rate used for the performance-based adjustments.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Section 50

-Paragraph 1

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-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ 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 (c)(1)(iv)(3)

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ 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 (c)(2)(iii)(3)

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Subparagraph (c)(2)(iii)(1)

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

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

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No definition available.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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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.

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No definition available.

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Stockholders' Equity and Stock Compensation Plans (Details 3) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 29, 2013
Stockholder's equity and stock compensation plans
Vesting period	1 year	1 year
Restricted Stock Program
Stock-based compensation expense	$ 10,926	$ 10,374	$ 8,775
Restricted Stock Program
Restricted Stock Program
Stock-based compensation expense	7,500	$ 4,600	$ 2,200
Unrecognized compensation cost	$ 12,800
Restricted Stock
Stockholder's equity and stock compensation plans
Initially granted (in shares)	0	117,067	108,350
Number of Shares
Nonvested balance at the beginning of the period (in shares)	223,000
Vested (in shares)	(55,000)
Forfeited (in shares)	(64,000)
Nonvested balance at the end of the period (in shares)	104,000	223,000
Vested or expected to vest at the end of the period (in shares)	104,000
Weighted-Average Grant Date Fair Value
Nonvested balance at the beginning of the period (in dollars per share)	$ 26.26
Vested (in dollars per share)	28.58
Forfeited (in dollars per share)	22.87
Nonvested balance at the end of the period (in dollars per share)	27.15	$ 26.26
Vested or expected to vest at the end of the period (in dollars per share)	$ 27.15
Performance-based restricted stock
Stockholder's equity and stock compensation plans
Period of growth in earnings per share considered to calculate percentage of shares vested	3 years
Additional shares awarded based on performance-based adjustments (in shares)			4,947
Base rate percentage for performance based adjustments			100.00%
Performance-based restricted stock \| Minimum
Stockholder's equity and stock compensation plans
Percentage of shares that ultimately vest depending on fiscal year earnings per share growth rates	0.00%
Performance-based restricted stock \| Maximum
Stockholder's equity and stock compensation plans
Percentage of shares that ultimately vest depending on fiscal year earnings per share growth rates	140.00%
PSUs
Stockholder's equity and stock compensation plans
Vesting period	3 years
Percentage of shares that ultimately vest depending on fiscal year earnings per share growth rates	50.00%
Percentage of shares that ultimately vest depending on total shareholder return	50.00%
Number of Shares
Granted (in shares)	139,052
Weighted-Average Grant Date Fair Value
Granted (in dollars per share)	$ 31.66
RSUs
Stockholder's equity and stock compensation plans
Vesting period	4 years	4 years
Number of Shares
Nonvested balance at the beginning of the period (in shares)	432,289
Granted (in shares)	234,685	224,911
Vested (in shares)	(141,000)
Forfeited (in shares)	(43,000)
Nonvested balance at the end of the period (in shares)	483,111	432,289
Weighted-Average Grant Date Fair Value
Nonvested balance at the beginning of the period (in dollars per share)	$ 26.09
Granted (in dollars per share)	27.21	$ 28.53
Vested (in dollars per share)	25.64
Forfeited (in dollars per share)	26.33
Nonvested balance at the end of the period (in dollars per share)	$ 26.75	$ 26.09