Stock Based Compensation (Details) (USD $)	9 Months Ended	0 Months Ended
Sep. 30, 2012	Aug. 09, 2012 Stock Options [Member]	Mar. 14, 2011 Stock Options [Member]	Feb. 29, 2012 Restricted Stock [Member]
Stock-Based Compensation [Abstract]
Share-based compensation arrangement, expected dividend rate (in hundredths)	0.00%
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, shares granted options to purchase (in shares)		40,000	90,000
Exercise price of stock options granted (in dollars per share)		$ 10	$ 22.5
Percentage of shares vested on first anniversary of the grant date (in hundredths)		30.00%	30.00%	30.00%
Percentage of shares vested on second anniversary of the grant date (in hundredths)		30.00%	30.00%	30.00%
Percentage of shares vested on third anniversary of the grant date (in hundredths)		40.00%	40.00%	40.00%
Stock option, expiration date		Aug. 09, 2017	Mar. 14, 2016
Restricted shares granted (in shares)				7,132
Number of employees who received grants				14
Unrecognized compensation expense	$ 719,000

Refers to the number of employees to whom shares granted.

No definition available.

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- Definition

Refers to the percentage of shares vested on grant date year one.

+ References

No definition available.

+ Details

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- Definition

Refers to the percentage of shares vested on grant date year three.

+ References

No definition available.

+ Details

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- Definition

Refers to the percentage of shares vested on grant date year two.

+ References

No definition available.

+ Details

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- Details

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- Definition

Aggregate unrecognized cost of option awards made to employees under a stock option plan or plans, that have yet to vest.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Date the equity-based award expires, in CCYY-MM-DD format.

+ References

+ Details

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Period Type:	duration

- 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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(iii)

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

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph e(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.

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- Definition

Net number of non-option equity instruments granted to participants.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

+ References

No definition available.

+ Details

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