Warrant redemption liability (Details)  | 
 Sep. 30, 2016  
USD ($)  
$ / shares 
 | 
|---|---|
| Warrant redemption liability Details | |
| Prepaid warrant liability | $ | $ 0 | 
| Transferring redemption fee to the former holders | $ / shares | $ 0.1 | 
| X | ||||||||||
- Definition Prepaid warrant liability No definition available. 
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| X | ||||||||||
- Definition Transferring redemption fee to the former holders No definition available. 
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| X | ||||||||||
- References No definition available. 
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