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Accounts and Other Receivables, Net - Schedule of Accounts Notes Loans and Financing Receivable (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Receivables [Abstract] |  |
Accrued insurance recoveries | $ 104 | $ 138
Other receivables | 135 | 79
Total | 10,586 | 8,977
CompX |  |
Receivables [Abstract] |  |
Trade receivables | 10,417 | 8,847
Allowance for doubtful accounts | $ (70) | $ (87)

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