Income taxes (Details) - USD ($) |
3 Months Ended | 6 Months Ended | 13 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
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| Income Tax Disclosure [Abstract] | |||||
| Release of valuation allowance | $ 7,700,000 | ||||
| Provision (benefit) for income taxes | $ 545,613 | $ (5,931,436) | $ 479,662 | $ (6,541,931) | |
| Effective income tax rate | (60.80%) | (225.70%) | (6.60%) | (43.80%) | |
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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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