Unrecognized cost of unvested share-based compensation awards.

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=6415400&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=6415400&loc=d3e5070-113901

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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.

+ 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)

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

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- Definition

Description of pertinent provisions of equity-based compensation awards that have actual or potential impact upon the company's financial statements.

+ 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)

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

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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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Equity-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Jan. 09, 2008	Feb. 05, 2003	Feb. 11, 1998	Oct. 03, 2015	Jan. 07, 2015
Share-based Compensation Arrangement by Share-based Payment Award
Shares authorized for the issuance	4,000,000	1,350,000	2,025,000		2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award	10	10	10
Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award
Closing price of common stock				$ 54.51
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Unvested compensation expense				$ 40
Unvested compensation expense weighted-average period of recognition, in years				1 year
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award
Unvested compensation expense				$ 2,080
Unvested compensation expense weighted-average period of recognition, in years				2 years
Share-based Compensation Award, SARS, Outside Directors
Share-based Compensation Arrangement by Share-based Payment Award
Stock option vesting period				3 years
Share-based Compensation Award, Options, Key Employees
Share-based Compensation Arrangement by Share-based Payment Award
Stock option vesting period				5 years
Share-based Compensation Award, SARS, Officers & Key Employees
Share-based Compensation Arrangement by Share-based Payment Award
Stock option vesting period				1 year