Accounts Receivable, Net (Tables)

3 Months Ended

Mar. 31, 2020

Receivables [Abstract]

Schedule of Accounts Receivable, Net

	December 31,			March 31,
	2019			2020
	(In thousands)
Accounts receivable, net:
Security Products	$	10,321		$	12,830
Marine Components		1,619			2,472
Allowance for doubtful accounts		(70	)		(70	)
Total accounts receivable, net	$	11,870		$	15,232