Expiration period from date of grant for options granted.

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- Definition

Maximum amount for which common stock can be purchased by employees in any calendar year.

+ References

No definition available.

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- Definition

Percentage of lower of fair market value at beginning or end of applicable offering period used for calculating price of common stock to be purchased by employees.

+ References

No definition available.

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- Definition

Purchase period for common stock.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award term for options granted.

+ References

No definition available.

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- Definition

Stock compensation plans.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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=96867065&loc=d3e5070-113901

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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.

+ 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)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the 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
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

+ Details

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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)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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.

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Stock Compensation Plans and Stock Based Compensation (Details Textual) - USD ($) shares in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
One Thousand Nine Hundred Ninety Five Directors Stock Options Plan [Member]
Stock Compensation Plans (Textual) [Abstract]
Number of shares available for issuance under equity incentive plan	600
Term of options granted under Directors' Plan	10 years
Employee stock purchase plans [Member]
Stock Compensation Plans (Textual) [Abstract]
Percentage of lower of fair market value at beginning or end of applicable offering period used for calculating price of common stock to be purchased by employees	85.00%
Purchase period for common stock	6 months
Number of shares available for issuance under Employee Stock Purchase Plan	3,900
Employee Stock Purchase Plan with Offering Period Commencing on February 1, 2014 [Member] [Member]
Stock Compensation Plans (Textual) [Abstract]
Maximum percentage of annual base earnings plus bonuses and commissions for which common stock can be purchased by employees	7.00%
Maximum amount for which common stock can be purchased by employees in any calendar year	$ 9,411.76
2014 Omnibus Equity Incentive Plan [Member]
Stock Compensation Plans (Textual) [Abstract]
Additional shares authorized and available for issuance under equity incentive plan	6,500
Number of shares available for issuance under equity incentive plan	11,200
Expiration period from date of grant for options granted	7 years
Stock options [Member]
Stock Compensation Plans (Textual) [Abstract]
Total unrecognized compensation expense, net of estimates forfeitures	$ 9,500,000
Weighted-average vesting period over which unrecognized compensation expense will be recognized	2 years 3 months
Stock options [Member] \| 2014 Omnibus Equity Incentive Plan [Member] \| Maximum [Member]
Stock Compensation Plans (Textual) [Abstract]
Minimum vesting period	4 years
Stock options [Member] \| 2014 Omnibus Equity Incentive Plan [Member] \| Minimum [Member]
Stock Compensation Plans (Textual) [Abstract]
Minimum vesting period	3 years
Employee Stock [Member] \| One Thousand Nine Hundred Ninety Five Directors Stock Options Plan [Member]
Stock Compensation Plans (Textual) [Abstract]
Minimum vesting period	1 year
Restricted stock [Member]
Stock Compensation Plans (Textual) [Abstract]
Performance-based stock awards, total granted	11,968	12,082
Total unrecognized compensation expense, net of estimates forfeitures	$ 264,400,000
Weighted-average vesting period over which unrecognized compensation expense will be recognized	2 years 1 month
Restricted stock [Member] \| Maximum [Member]
Stock Compensation Plans (Textual) [Abstract]
Minimum vesting period	4 years
Restricted stock [Member] \| Minimum [Member]
Stock Compensation Plans (Textual) [Abstract]
Minimum vesting period	3 years
Restricted stock [Member] \| One Thousand Nine Hundred Ninety Five Directors Stock Options Plan [Member]
Stock Compensation Plans (Textual) [Abstract]
Minimum vesting period	1 year
Restricted stock [Member] \| 2014 Omnibus Equity Incentive Plan [Member] \| Maximum [Member]
Stock Compensation Plans (Textual) [Abstract]
Minimum vesting period	4 years
Restricted stock [Member] \| 2014 Omnibus Equity Incentive Plan [Member] \| Minimum [Member]
Stock Compensation Plans (Textual) [Abstract]
Minimum vesting period	3 years
Performance Based Restricted Stock Grants [Member]
Stock Compensation Plans (Textual) [Abstract]
Performance-based stock awards, total granted	1,530