| Cash and cash equivalents (Tables) | 3 Months Ended | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mar. 31, 2015 | |||||||||||||||||||||||||||||||||
| Cash and cash equivalents | |||||||||||||||||||||||||||||||||
| Schedule Of Cash | 
 
 
 | 
| X | ||||||||||
| 
- Details 
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| X | ||||||||||
| 
- Definition Tabular disclosure of the components of cash and cash equivalents. No definition available. 
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