Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accrued liabilities:
Employee benefits	$ 7,010	$ 8,331
Customer tooling	184	264
Taxes other than on income	701	350
Other	487	619
Total accounts payable and accrued liabilities	11,075	12,078
Security Products
Accounts payable:
Accounts payable	2,040	1,975
Marine Components
Accounts payable:
Accounts payable	$ 653	$ 539