Share-Based Compensation Arrangement By Share-Based Payment Award, Comparison Period

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
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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

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-Publisher FASB
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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 number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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

Percentage of vesting of share-based compensation awards.

+ References

+ Details

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- Definition

Number of non-vested options outstanding.

+ References

No definition available.

+ Details

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- Definition

Number of options vested.

+ References

No definition available.

+ Details

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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
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- Details

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Stock-Based Compensation - (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 01, 2017	Apr. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 2,929		$ 3,242	$ 6,772	$ 7,798
Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, nonvested, number of shares	376,200			376,200		596,600
Options vested, number of shares	82,300	91,500
Options canceled, number of shares	28,000	183,200
Options exercised, number of shares	9,200
Stock-based compensation	$ 100		$ 100	$ 300	$ 200
Executives \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				2 years
Comparison period				2 years
Executives \| Minimum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage				0.00%
Executives \| Maximum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage				200.00%