Shareholders' Equity (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Shareholders' Equity
Period for recognition of unrecognized compensation cost related to unvested share-based payment awards	1 year 4 months 24 days
Unrecognized compensation cost expected to be recognized as compensation expense
2015	$ 14,438
2016	10,133
2017	2,889
2018	2,575
2019	561
Total	$ 30,596

Unrecognized compensation cost expected to be recognized in year five of the five succeeding years.

No definition available.

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- Definition

Unrecognized compensation cost expected to be recognized in year four of the five succeeding years.

+ References

No definition available.

+ Details

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- Definition

Unrecognized compensation cost expected to be recognized in year one of the five succeeding years.

+ References

No definition available.

+ Details

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- Definition

Unrecognized compensation cost expected to be recognized in year three of the five succeeding years.

+ References

No definition available.

+ Details

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- Definition

Unrecognized compensation cost expected to be recognized in year two of the five succeeding years.

+ References

No definition available.

+ Details

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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

+ Details

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- Details

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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

+ Details

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- Details

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