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Revenue Recognition - Schedule of Disaggregates Net Sales By Reporting Unit (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Disaggregation Of Revenue [Line Items]        
Total net sales $ 23,800 $ 33,730 $ 56,111 $ 64,907
Security Products        
Disaggregation Of Revenue [Line Items]        
Total net sales 18,573 26,927 44,042 51,631
Marine Components        
Disaggregation Of Revenue [Line Items]        
Total net sales $ 5,227 $ 6,803 $ 12,069 $ 13,276