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Stock Options (Details) (Stock options, USD $) | 12 Months Ended | 0 Months Ended | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 0 Months Ended | 12 Months Ended | 0 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | May 01, 2012 2003 Plan | Dec. 31, 2011 2003 Plan | Dec. 31, 2013 2003 Plan | Dec. 31, 2012 2003 Plan | Dec. 31, 2013 2012 Plan | Aug. 22, 2012 2012 Plan | Nov. 01, 2003 Maximum 2003 Plan | Dec. 31, 2013 Maximum 2003 Plan | Aug. 22, 2012 Maximum 2012 Plan
Stock Options |  |  |  |  |  |  |  |  |  |  |  |
Percentage of outstanding common stocks reserved for issuance |  |  |  |  |  |  |  |  |  | 10.00% |  |
Common stock available under the options plan (in shares) |  |  |  |  |  |  | 42,800 |  |  |  |  |
Number of shares available for purchase to each holder of stock option |  |  |  |  |  | 1 |  | 1 |  |  |  |
Term of options granted |  |  |  |  |  |  |  |  |  |  | 10 years | 10 years
Granted (in shares) |  |  |  | 50,000 | 767,000 |  |  | 0 |  |  |  |
Vesting percentage for every three months |  |  |  |  |  | 10.00% |  |  |  |  |  |
Period for each 10% vesting |  |  |  |  |  | 3 months |  |  |  |  |  |
Exercise price for options granted (in dollars per share) |  |  |  | $ 2.05 | $ 2.37 |  |  |  |  |  |  |
Percentage of award that vests on the Initial Vesting Date |  |  |  | 10.00% |  |  |  |  |  |  |  |
Percentage of award that vests quarterly over a 27 months period after the initial vesting date |  |  |  | 10.00% |  |  |  |  |  |  |  |
Period from the Initial Vesting Date for vesting of remaining options excluding options vesting on Initial Vesting Date |  |  |  | 27 months |  |  |  |  |  |  |  |
Number of shares authorized for issuance |  |  |  |  |  |  |  |  | 4,000,000 |  |  |
Valuation assumptions for stock options |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility (as a percent) |  | 82.89% | 86.91% |  |  |  |  |  |  |  |  |
Risk-free interest rate (as a percent) |  | 0.39% | 0.36% |  |  |  |  |  |  |  |  |
Expected life |  | 2 years 11 months 12 days | 3 years 2 months 26 days |  |  |  |  |  |  |  |  |
Dividend yield (as a percent) |  | 0.00% | 0.00% |  |  |  |  |  |  |  |  |
Estimated forfeiture rate (as a percent) |  | 10.00% | 10.00% |  |  |  |  |  |  |  |  |
Additional information related to stock option |  |  |  |  |  |  |  |  |  |  |  |
Weighted average fair value of options granted (in dollars per share) | $ 0.00 | $ 1.08 | $ 1.35 |  |  |  |  |  |  |  |  |

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- Definition Represents the percentage of stock awards vesting every three months. + References No definition available. + Details
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- Definition Represents the rate of estimated forfeiture used as an assumption to measure the stock-based compensation costs with the Black-Scholes option pricing model. + References No definition available. + Details
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- Definition Represents the number of shares that can be purchased as an entitlement for holding of stock options. + References No definition available. + Details
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- Definition Represents the period from Initial Vesting Date for vesting of remaining options excluding options vesting on Initial Vesting Date. + References No definition available. + Details
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- Definition Represents the percentage of the share-based compensation award that vests quarterly over a specified period from the Initial Vesting Date. + References No definition available. + Details
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- Definition Period from grant date that an equity-based award expires, 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 (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. + References No definition available. + Details
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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 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 + Details
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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 Reference 1: 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.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 + Details
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- Definition 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. + 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)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + 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)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock. + References No definition available. + Details
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