Accounting for Equity-Based Compensation (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2012
Company's stock option and SAR grants to equity incentive plans
Exercisable, Number of Options/SAR Units	7,795
Exercisable, Weighted Average Exercise Price	$ 13.17
Unexercisable, Number of Options/SAR Units	3,220
Unexercisable, Weighted Average Exercise Price	$ 6.70
Total, Number of Options/SAR Units	11,015
Total, Weighted Average Exercise Price	$ 11.28
Above $6.34 [Member]
Company's stock option and SAR grants to equity incentive plans
Exercisable, Number of Options/SAR Units	6,276
Exercisable, Weighted Average Exercise Price	$ 14.92
Unexercisable, Number of Options/SAR Units	1,517
Unexercisable, Weighted Average Exercise Price	$ (7.43)
Total, Number of Options/SAR Units	7,793
Total, Weighted Average Exercise Price	$ (13.46)
Less than $6.34 [Member]
Company's stock option and SAR grants to equity incentive plans
Exercisable, Number of Options/SAR Units	1,519
Exercisable, Weighted Average Exercise Price	$ 5.93
Unexercisable, Number of Options/SAR Units	1,703
Unexercisable, Weighted Average Exercise Price	$ 6.04
Total, Number of Options/SAR Units	3,222
Total, Weighted Average Exercise Price	$ 5.99

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Share based compensation arrangement by share based payment award options outstanding weighted average unexercise price.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award options vested and expected to vest unexercisable number.

+ References

No definition available.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under 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

-Subparagraph (c)(1)(iii)

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

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under 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

-Subparagraph (c)(1)(i)

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

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-Paragraph A240

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The number of exercisable share options (fully vested and expected to vest) that may be converted 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 (e)(2)

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

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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