Debt (Details) |
Sep. 30, 2017
USD ($)
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|---|---|
| Debt Disclosure [Abstract] | |
| Line of Credit Facility, Maximum Borrowing Capacity | $ 300,000,000 |
| Line of Credit Facility, Remaining Borrowing Capacity | 295,700,000 |
| Line of Credit Outstanding, Amount | $ 4,300,000 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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| X | ||||||||||
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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