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Fair Value of Financial Assets and Liabilities - Fair Value and Carrying Value of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Debt Disclosure [Abstract]    
Long-term debt and related current maturities, Fair Value $ 31,866 $ 31,876
Long-term debt and related current maturities, Carrying Value $ 31,864 $ 31,865