Accounts and Other Receivables, Net (Tables)

6 Months Ended

Jun. 30, 2018

Receivables [Abstract]

Schedule of Accounts Notes Loans and Financing Receivable

	December 31,			June 30,
	2017			2018
	(In thousands)
Trade receivables - CompX	$	10,516		$	13,831
Accrued insurance recoveries		145			15,000
Other receivables		79			318
Allowance for doubtful accounts		(70	)		(70	)
Total	$	10,670		$	29,079