Fair Value of Financial Assets - Additional Information (Details) |
Jun. 30, 2018 |
Dec. 31, 2017 |
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| Fair Value Disclosures [Abstract] | ||
| Discounted cash flow include a discount rate | 15.00% | 15.00% |
| X | ||||||||||
- Definition Discounted cash flow discount rate. No definition available.
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| X | ||||||||||
- References No definition available.
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