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Stockholders' Equity (Options) (Details) (Stock Options, USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended		3 Months Ended		6 Months Ended
	May 21, 2014	May 22, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation awards, vesting percentage per period (in Percent)					25.00%
Allocated Share-based Compensation Expense			$ 470	$ 131	$ 734	$ 178
Expected dividend yield assumption (in Percent)	0.588%	0.581%
Expected volatility assumption (in Percent)	33.36%	33.35%
Risk-free interest rate assumption (in Percent)	1.17%	1.185%
Expected life assumption (in Years)	4 years	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 4,480	$ 4,540

X

- Definition

The vesting rate per period of share based compensation awards.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Section 50

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-Number Topic 14

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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