Percentage of maximum amount available for issuance.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Annual Award Vesting Rights, Percentage

+ References

No definition available.

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- Definition

Share based compensation arrangement term for stock awards.

+ References

No definition available.

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- Definition

Term of treasury issues.

+ 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 50

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

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

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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.

+ 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=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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- 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

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

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=6415400&loc=d3e5070-113901

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

+ References

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Stock Compensation Plans (Details Textual) (USD $)	12 Months Ended
Stock Compensation Plans (Details Textual) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2008	May 02, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares remained available	519,000
Compensation expense recognized	$ 8,600,000	$ 4,300,000	$ 4,000,000
Stock Only Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of granting options to directors and management personnel				5 years
General vesting period of options granted				3 years
SOSARs and Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	0
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	1,400,000
Period for recognition of compensation cost	2 years
Number of shares issued	59,288
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost	$ 2,400,000
Period for recognition of compensation cost	2 years
Percentage of maximum amount available for issuance	71.00%	50.00%	40.00%
Performance Share Units \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued	96,232
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares remained available	248,000
Term of Treasury issues	1 year
The 2014 LT Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to grant under LT Plan					1,750,000
Number of shares remained available					1,749,000
Grants Prior 2013 \| Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General vesting period of options granted	3 years
Grants in 2013 \| Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General vesting period of options granted	2 years 3 months
Grants in 2013 \| Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General vesting period of options granted	2 years 3 months
Grants in 2014 \| Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General vesting period of options granted	3 years
Annual vesting of stock awards (percentage)	33.33%
Granted in 2014 and prior to 2013 \| Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
General vesting period of options granted	3 years