Accounts and Other Receivables, Net (Tables)

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Schedule of Accounts Notes Loans and Financing Receivable

	December 31,			March 31,
	2018			2019
	(In thousands)
Trade receivables - CompX	$	12,210		$	15,428
Accrued insurance recoveries		266			233
Other receivables		34			90
Allowance for doubtful accounts		(70	)		(70	)
Total	$	12,440		$	15,681