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Stock-based Compensation - Options outstanding (Details) (USD $)	Jun. 30, 2012
Options Outstanding, $4.35 - 5.24
Range of Exercise Prices, low	$ 4.35
Range of Exercise Prices, high	$ 5.24
Number of Options	3,750
Weighted Average Exercise Price Per Share	$ 4.35
Options Outstanding, $5.25 - 6.29
Range of Exercise Prices, low	$ 5.25
Range of Exercise Prices, high	$ 6.29
Number of Options	40,000
Weighted Average Exercise Price Per Share	$ 6.23
Options Outstanding, $6.30 - 6.80
Range of Exercise Prices, low	$ 6.30
Range of Exercise Prices, high	$ 6.80
Number of Options	40,000
Weighted Average Exercise Price Per Share	$ 6.80
Options Outstanding, $4.35 - 6.80
Range of Exercise Prices, low	$ 4.35
Range of Exercise Prices, high	$ 6.80
Number of Options	83,750
Weighted Average Exercise Price Per Share	$ 6.42
Weighted Average Remaining Contract Life in Years	8 years 146 days

X

- Definition

No authoritative reference available.

+ References

No definition available.

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- Definition

No authoritative reference available.

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- Definition

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No definition available.

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X

- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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 (c)(1)(i)-(ii)

-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 b(1)(a, b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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X

- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ 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 (c)(1)(i)-(ii)

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

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