Income Taxes (Details) $ in Millions |
Dec. 31, 2017
USD ($)
|
|---|---|
| Income Taxes | |
| Tax credit carryforward after tax | $ 49.6 |
| Operating loss carryforwards expected to be unutilized | $ 8.2 |
| X | ||||||||||
- Definition The amount of tax credit carryforwards on a tax affected basis. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|