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Employee Stock Purchase Plan Stock Options and Warrants Stock Based Compensation Plans (Details) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011
Long Term Incentive Plan 2006 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock Option Vesting Performance Based | 1
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 1,400
Employee Stock Purchase Plan Qualified [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 281
Share Based Compensation Arragement Employee Stock Purchase Plan Percentage of Market Price Purchase Date | 95.00%
Employee Stock Purchase Plan Non Qualified [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 79
Minimum [Member] | Long Term Incentive Plan 2006 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock Option Vesting | 3
Stock Option Contractual Life | 7
Maximum [Member] | Long Term Incentive Plan 2006 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock Option Vesting | 5
Stock Option Contractual Life | 10

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- Definition Share Based Compensation Arragement Employee Stock Purchase Plan, Percentage of Market Price. Purchase Date + References No definition available. + Details
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- Definition Stock Option Contractual Life + References No definition available. + Details
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- Definition Annual Stock Option Vesting + References No definition available. + Details
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- Definition Stock Option Vesting Performance Based + References No definition available. + Details
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- 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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