Income taxes (Details) - USD ($) |
1 Months Ended | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2015 |
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
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| Income Tax Disclosure [Abstract] | |||||
| Release of valuation allowance | $ 7,700,000 | $ 1,500,000 | $ 2,200,000 | ||
| Provision (benefit) for income taxes | $ 922,427 | $ 462,898 | $ (5,619,504) | $ 813,580 | |
| Effective income tax rate percent | (123.69%) | 35.26% | (129.31%) | 59.90% | |
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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