Quarterly Results - Schedule of Income (Loss) from Continuing Operations and Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Selected Quarterly Financial Information [Abstract]
Net sales	$ 235,282	$ 233,473	$ 216,183	$ 231,560	$ 230,972	$ 232,515	$ 235,053	$ 229,133	$ 916,498	$ 927,673	$ 866,286
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross Profit	$ 40,753	$ 38,251	$ 32,063	$ 36,802	$ 36,404	$ 38,021	$ 37,500	$ 35,617	$ 147,869	$ 147,542	$ 130,407
Income (loss) from continuing operations	$ 9,131	$ 6,527	$ (2,281)	$ 7,406	$ (44,750)	$ 8,643	$ 6,293	$ 4,603	$ 20,783	$ (25,211)	$ (448)
Earnings (loss) per share	$ 0.21	$ 0.15	$ (0.05)	$ 0.17	$ (1.01)	$ 0.19	$ 0.14	$ 0.10