|
Deferred Income (Tables)
|
3 Months Ended | ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2012
|
|||||||||||||||||||||||||||||||||||||||||||
| Deferred Income (Tables) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Deferred Income By Arrangement Disclosure [Table Text Block] | Deferred income at the end of each period was as follows:
|
||||||||||||||||||||||||||||||||||||||||||