Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accrued Liabilities Current [Abstract]
Accrued payroll	$ 1,738	$ 899
Accrued employee benefits	708	829
Accrued bonuses	760	797
Accrued vacation	1,293	1,218
Accrued interest	1,007	932
Accrued commissions	273	344
Accrued expenses—other	966	684
Accrued warranty	1,423	1,604
Accrued taxes other than income taxes	1,190	1,297
Accrued product liability and workers compensation claims	252	534
Total accrued expenses	$ 9,610	$ 9,138