Accounts Receivable, Net (Tables)

9 Months Ended

Sep. 30, 2019

Receivables [Abstract]

Schedule of Accounts Receivable, Net

	December 31,			September 30,
	2018			2019
	(In thousands)
Accounts receivable, net:
Security Products	$	10,596		$	11,239
Marine Components		1,614			2,264
Allowance for doubtful accounts		(70	)		(70	)
Total accounts receivable, net	$	12,140		$	13,433