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Share-Based Payments (Details) | 12 Months Ended |  | 12 Months Ended | 6 Months Ended | 24 Months Ended | 30 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 plan | Dec. 31, 2011 | Dec. 31, 2012 Employee Stock | Jun. 30, 2005 Incentive Plan, 1998 | Jun. 30, 2003 Incentive Plan, 1998 | Dec. 31, 1999 Incentive Plan, 1998 | Jun. 30, 2002 Incentive Plan, 1998 | Dec. 31, 2012 Incentive Plan, 1998 | Dec. 31, 2012 Equity Incentive Plan, 2007 | Dec. 31, 2012 Director and Officer | Dec. 31, 2012 Employee
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |  |  |  |  |  |  |  |
Number of share-based compensation plans | 2 |  |  |  |  |  |  |  |  |  |
Options, grants in period, gross | 187,000 |  |  |  |  | 1,066,000 | 1,248,250 |  |  |  |
Share-based payment award, award vesting period |  |  |  |  |  | 9 years 9 months 18 days | 6 years |  |  | 3 years | 4 years
Share-based payment award, accelerated vesting, number |  |  |  | 300,494 | 637,089 |  |  |  |  |  |
Share-based payment award, number of shares authorized |  |  |  |  |  |  |  | 2,500,000 | 1,000,000 |  |
Share-based payment award, expiration period | 10 years |  |  |  |  |  |  |  |  |  |
Share-based payment award, options, outstanding, number | 1,137,283 | 1,160,933 |  |  |  |  |  | 578,615 | 558,668 |  |
Number of options authorized and unissued |  |  |  |  |  |  |  | 0 | 357,410 |  |
Share-based payment award, maximum employee subscription rate |  |  | 10.00% |  |  |  |  |  |  |  |
Number of shares contributed by employer per share of employee contributed shares |  |  | 9 |  |  |  |  |  |  |  |

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans + References No definition available. + Details
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- Definition Share based Compensation Arrangement by Share based Payment Award, Number of Shares Authorized and Unissued + References No definition available. + Details
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- Definition Share based Payment Arrangement by Share based Payment Award, Equity Instruments Other than Options, Employer Matching Contribution Per Employee, per Share + References No definition available. + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The highest percentage of annual salary that an employee is permitted to utilize with respect to the 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 -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 65 -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. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -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. + 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 Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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. Reference 2: 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 Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(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. Reference 2: 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 Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -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. + Details
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