Accounts and Other Receivables, Net (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Schedule of Accounts Notes Loans and Financing Receivable

	December 31,			March 31,
	2017			2018
	(In thousands)
Trade receivables - CompX	$	10,516		$	12,745
Accrued insurance recoveries		145			141
Other receivables		79			74
Allowance for doubtful accounts		(70	)		(72	)
Total	$	10,670		$	12,888