| Discontinued Operations Schedule of discontinued operations earnings per share (Tables) | 3 Months Ended | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mar. 31, 2012 | |||||||||||||||||||||||||||||
| Discontinued Operations [Abstract] | |||||||||||||||||||||||||||||
| Discontinued Operations Earnings Per Share [Table Text Block] | Earnings per share impact of discontinued operations The earnings per share from discontinued operations, discussed above, is as follows: 
 | ||||||||||||||||||||||||||||
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
| 
- Definition Discontinued Operations Earnings Per Share [Table Text Block] No definition available. 
 |