Accounts and Other Receivables, Net (Tables)

9 Months Ended

Sep. 30, 2017

Receivables [Abstract]

Schedule of Accounts Notes Loans and Financing Receivable

	December 31,			September 30,
	2016			2017
	(In thousands)
Trade receivables - CompX	$	10,417		$	11,787
Accrued insurance recoveries		104			139
Other receivables		135			139
Allowance for doubtful accounts		(70	)		(70	)
Total	$	10,586		$	11,995