XML 23 R104.htm IDEA: XBRL DOCUMENT v2.4.0.6

Cash and stock-based compensation plans (Details 4) (USD $)					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2012 Restricted Stock Directors [Member]	Dec. 31, 2011 Restricted Stock Directors [Member]	Dec. 31, 2010 Restricted Stock Directors [Member]
Outstanding Shares (beginning balance)	534	1,812	17,746	18,755	3,518	8,917	14,673
Granted Shares					0	0	0
Vested Shares					(3,518)	(5,399)	(5,756)
Outstanding Shares (ending balance)	534	1,812	17,746	18,755	0	3,518	8,917
Expected to vest Shares					0
Outstanding Weighted average grant date fair value					$ 21.35	$ 20.77	$ 20.45
Granted - Weighted average grant date fair value					$ 0	$ 0	$ 0
Vested - Weighted average grant date fair value					$ 21.35	$ 20.39	$ 19.95
Outstanding Weighted average grant date fair value					$ 0	$ 21.35	$ 20.77
Expected to vest Weighted average grant date fair value					0

X

- Definition

As of the balance sheet date, the number of shares into which fully expected to vest restricted stock options outstanding can be converted under the option plan.

+ References

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As of the balance sheet date, weighted average grant date fair value into which fully expected to vest restricted stock options outstanding can be converted under the option plan.

+ References

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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

-Section 50

-Paragraph 2

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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).

+ References

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

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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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- 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.

+ References

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-Paragraph A240

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- Definition

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

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-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.

+ References

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

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