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Financial Instruments - Summary of Outstanding Interest Rate Swaps (Detail) - Interest Rate Swaps [Member] - USD ($) | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Other Non-current Liability [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount | $ 70,000,000 |
Fair Value | $ (688,000) |
Other Non-current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Notional Amount |  | $ 70,000,000
Fair Value |  | $ 1,096,000

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- Definition Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet. + References No definition available. + Details
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