Fair Value Measurement- Fair Value and Carrying Value of Long-term Debt (Details) - USD ($) |
Mar. 31, 2018 |
Dec. 31, 2017 |
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| Fair Value Disclosures [Abstract] | ||
| Long-term debt value, fair value | $ 208,136,000 | $ 160,108,000 |
| Long-term debt value, carrying value | 208,854,000 | 160,598,000 |
| Assets, fair value disclosure, nonrecurring | $ 0 | $ 0 |
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- Definition Long-term Debt, Excluding Capital Lease Liabilities No definition available.
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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. No definition available.
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- References No definition available.
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
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