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- Definition 
          Share Based Compensation Arrangement By Share Based Payment Award Option Exercisable Intrinsic Value. 
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- Definition 
          Share Based Compensation Arrangement By Share Based Payment Award Option Exercisable Weighted Average Remaining Contractual Term. 
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- Definition 
          Share Based Compensation Arrangement By Share Based Payment Award Option Exercises In Period Weighted Average Exercise Price. 
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- Definition 
          ShareBasedCompensationArrangementBy Share Based Payment Award Option Grants In Period Weighted Average Exercise Price. 
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- Definition 
          Stock options activity under share based payment plans. 
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- Definition 
          The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The combined weighted average exercise price associated with stock options during the period that have either lapsed or been forfeited. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to options outstanding under the plan as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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