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Long-Term Debt - Summary of Long-term Debt (Detail)
$ in Thousands
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]  
Unamortized deferred financing costs $ (105)
Long-term Debt 9,432
Less current portion of long-term debt (9,432)
11.5% Mortgage Loan Payable Due January 2019 [Member]  
Debt Instrument [Line Items]  
Long-term Debt, Gross $ 9,537