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Stock-Based Compensation (Details Textual) (USD $) In Thousands, except Per Share data, unless otherwise specified | 6 Months Ended
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Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value | $ 39
Share-based Compensation Arrangement by Share-based Payment Award, Estimated Fair Value of Stock Price (in dollars per share) | $ 7.36
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | 8 years 8 months 12 days
Equity Plan 2006 [Member] |
Share-based Compensation Shares Authorized Under Stock Option Plans Expire Period | 10 years

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, estimated fair value of stock price. + References No definition available. + Details
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- Definition The period of time to exercise share-based compensation shares authorized under stock option plans. + References No definition available. + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding. + 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 (e) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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Balance Type: | debit
Period Type: | instant