Fair Value Measurements - Additional Information (Details) - Level 3 [Member] |
9 Months Ended | 12 Months Ended |
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Sep. 30, 2018 |
Dec. 31, 2017 |
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| Fair Value, Option, Qualitative Disclosures Related to Election [Line Items] | ||
| Fair value interest rate spreads, minimum | 1.00% | 1.00% |
| Fair value interest rate spreads, maximum | 4.00% | 4.00% |
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- Definition Fair Value Interest Rate Spreads Maximum No definition available.
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- Definition Fair Value Interest Rate Spreads Minimum No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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