Income taxes - Net Operating Loss and Expenditure Credit Carryforwards (Details) $ in Millions |
Dec. 31, 2016
USD ($)
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|---|---|
| Income taxes | |
| Net operating loss and expenditure credit carryforwards | $ 86.0 |
| X | ||||||||||
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws, and the amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. No definition available.
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| X | ||||||||||
- References No definition available.
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