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Stock-Based Compensation (ESPP) (Details) (ESPP, USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Mar. 31, 2012	Jun. 30, 2013	Jun. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 43		$ 29				$ 230	$ 101
Expected dividend yield assumption (in Percent)							0.60%
Expected volatility assumption (in Percent)							41.00%
Risk-free interest rate assumption (in Percent)		0.08%		0.02%	0.12%	0.06%	0.135%	0.09%	0.12%
Expected life assumption (in Years)		3 months		3 months	6 months	6 months	9 months	9 months	1 year
Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forecasted risk-free interest rate assumption (in Percent)	0.15%						0.15%
Forecasted expected life assumption (in Years)							1 year

X

- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Expected Risk-Free Interest Rate

+ References

No definition available.

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Forecasted Expected Term

+ 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

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

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-Subparagraph (SAB TOPIC 14.F)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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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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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

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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

-Name Accounting Standards Codification

-Topic 718

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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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- Definition

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

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