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Stock-Based Compensation (Details Textual) (USD $) | 12 Months Ended | 0 Months Ended | 1 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Common Stock Options [Member] | Dec. 31, 2012 Common Stock Options [Member] | Dec. 31, 2011 Common Stock Options [Member] | Dec. 31, 2013 Non Executive Directors Share Plan [Member] | Dec. 31, 2012 Non Executive Directors Share Plan [Member] | Dec. 31, 2011 Non Executive Directors Share Plan [Member] | May 14, 2008 Equity Incentive Plan2008 [Member] | Jul. 31, 2011 Equity Incentive Plan2008 [Member] | Dec. 31, 2013 Redeemable Preferred Stock [Member] | Dec. 31, 2012 Redeemable Preferred Stock [Member] | Dec. 31, 2011 Redeemable Preferred Stock [Member] | Dec. 31, 2013 Redeemable Preferred Stock [Member] Employee Stock Option [Member] | Dec. 31, 2012 Redeemable Preferred Stock [Member] Employee Stock Option [Member] | Dec. 31, 2011 Redeemable Preferred Stock [Member] Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  | 6,600 | 5,780 | 5,440 |  |  |  |  | 18,000 |  |  |  | 10,180 | 10,033 | 7,455
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  | 13,980 | 10,886 | 7,614 |  |  | 10,180 | 11,417 | 8,345 |  |  |
Allocated Share-based Compensation Expense | $ 246,473 | $ 371,038 | $ 494,648 |  |  |  | $ 135,503 | $ 82,649 | $ 71,945 |  |  |  |  |  |  |  |
Stock Reserved For Future Issuance |  |  |  |  |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price | $ 13.94 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, Price Per Share | $ 14.10 |  |  |  |  |  |  |  |  |  | $ 9.11 |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Options Non Vested Outstanding Number | 70,133 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | 154,211 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Options Non Vested Outstanding Weighted Average Exercise Price | $ 10.36 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total | $ 55,123 |  |  |  |  |  |  |  |  |  |  | $ 138,091 |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Options Non Vested Outstanding Weighted Average Remaining Contractual Term | 2 years 11 months 8 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term | 1 year 3 months 11 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 2 years 11 months 8 days |  |  |  |  |  |  |  |  |  |  | 1 year 2 months 26 days |  |  |  |  |

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- Definition As of the balance sheet date, the number of shares into which non vested stock options outstanding can be converted under the option plan. + References No definition available. + Details
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- Definition As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are non vested. + References No definition available. + Details
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- Definition Weighted average remaining contractual term for non vested options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan. + 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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