| X | ||||||||||
| 
             
- Details 
          
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Number of non-vested options outstanding. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Details 
          
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Number of non-vested options forfeited. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Weighted average grant-date fair value of non-vested options forfeited. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Weighted average grant-date fair value of non-vested options outstanding. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Number of options vested. No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Weighted average grant-date fair value of options vested. No definition available. 
  |