Accounts Payable and Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Payables And Accruals [Abstract]

Accounts Payable and Accrued Liabilities

	December 31,
	2018		2019
	(In thousands)
Accounts payable:
Security Products	$	2,708	$	1,975
Marine Components		527		539
Accrued liabilities:
Employee benefits		8,068		8,331
Customer tooling		334		264
Taxes other than on income		328		350
Insurance		108		167
Sales rebates		156		117
Other		275		335
Total accounts payable and accrued liabilities	$	12,504	$	12,078