Subsequent Events - Additional Information (Details) - USD ($) $ in Millions |
Jan. 27, 2017 |
Dec. 31, 2010 |
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| Subsequent Event [Line Items] | ||
| Payments for royalties | $ 4.7 | |
| Subsequent Event | ||
| Subsequent Event [Line Items] | ||
| Payments for royalties | $ 4.7 |
| X | ||||||||||
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. No definition available.
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| X | ||||||||||
- Definition Additional royalty assessed after ruling by the IBLA. No definition available.
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| X | ||||||||||
- Details
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