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Condensed Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Condensed Consolidated Statements of Changes in Shareholders' Equity
Stock option activity, tax benefit	$ 7,300	$ 2,717
Restricted stock activity, tax benefit	$ 452	$ 749

X

- Definition

Represents the tax benefit (expense) realized from the exercise of restricted stock during the period.

+ References

No definition available.

+ Details

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X

- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

+ 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 (j)

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

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