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Shareholders' Equity (Details 3)	12 Months Ended
	Dec. 31, 2011
Summary of the nonvested share activity
Beginning Balance, Number of Shares	10,196,886
Awards granted, Number of Shares	6,149,130
Awards forfeited, Number of Shares	(169,342)
Awards cancelled on failed vesting conditions, Number of Shares	(2,149,972)
Awards vested, Number of Shares	(3,346,791)
Ending Balance, Number of Shares	10,679,911
Employee Plan 2008 [Member]
Summary of the nonvested share activity
Beginning Balance, Number of Shares	628,510
Awards forfeited, Number of Shares	(3,531)
Awards vested, Number of Shares	(624,979)
Ending Balance, Number of Shares	0
Employee Plan 2009 [Member]
Summary of the nonvested share activity
Beginning Balance, Number of Shares	2,774,056
Awards forfeited, Number of Shares	(31,144)
Awards vested, Number of Shares	(1,485,874)
Ending Balance, Number of Shares	1,257,038
Employee Plan 2010 [Member]
Summary of the nonvested share activity
Beginning Balance, Number of Shares	6,506,820
Awards forfeited, Number of Shares	(73,852)
Awards cancelled on failed vesting conditions, Number of Shares	(2,149,972)
Awards vested, Number of Shares	(1,058,438)
Ending Balance, Number of Shares	3,224,558
Employee Plan 2011 [Member]
Summary of the nonvested share activity
Beginning Balance, Number of Shares	0
Awards granted, Number of Shares	5,976,630
Awards forfeited, Number of Shares	(30,815)
Ending Balance, Number of Shares	5,945,815
Supervisory Board 2008 Plan [Member]
Summary of the nonvested share activity
Beginning Balance, Number of Shares	42,500
Awards vested, Number of Shares	(42,500)
Ending Balance, Number of Shares	0
Supervisory Board 2009 Plan [Member]
Summary of the nonvested share activity
Beginning Balance, Number of Shares	95,000
Awards vested, Number of Shares	(60,000)
Ending Balance, Number of Shares	35,000
Supervisory Board 2010 Plan [Member]
Summary of the nonvested share activity
Beginning Balance, Number of Shares	150,000
Awards vested, Number of Shares	(75,000)
Ending Balance, Number of Shares	75,000
Supervisory Board 2011 Plan [Member]
Summary of the nonvested share activity
Beginning Balance, Number of Shares	0
Awards granted, Number of Shares	172,500
Awards forfeited, Number of Shares	(30,000)
Ending Balance, Number of Shares	142,500

X

- Definition

Share based compensation arrangement by share based payment award equity instruments other than options cancelled on failed vesting conditions in period.

+ References

No definition available.

+ Details

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X

- Definition

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

+ 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(2)(e)

-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

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

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

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X

- 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 Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(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.



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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

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X

- 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 Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(a)

-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 Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(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 3: 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=6415400&loc=d3e5070-113901

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- Definition

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

+ 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(2)(d)

-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

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(2)

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

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