Acquisitions - Summary of Unaudited Consolidated Results of Operations, Including Proforma Results (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
As Reported
Net sales	$ 257,922	$ 243,049	$ 255,532	$ 238,349	$ 233,249	$ 221,659	$ 224,810	$ 203,035	$ 994,852	$ 882,753	$ 727,852
Net income	$ (4,205)	$ (3,398)	$ 6,859	$ 6,195	$ 9,188	$ 16,619	$ 10,941	$ 5,269	$ 5,451	$ 42,017	$ 27,523
Basic (in dollars per share)	$ (0.08)	$ (0.06)	$ 0.12	$ 0.11	$ 0.17	$ 0.31	$ 0.22	$ 0.10	$ 0.10	$ 0.80	$ 0.56
Diluted (in dollars per share)	$ (0.08)	$ (0.06)	$ 0.12	$ 0.11	$ 0.16	$ 0.30	$ 0.21	$ 0.10	$ 0.10	$ 0.78	$ 0.55
Pro Forma
Net sales										$ 928,336	$ 768,571
Net income										$ 20,699	$ (13,720)
Basic, Pro Forma (in dollars per share)										$ 0.40	$ (0.28)
Diluted, Pro Forma (in dollars per share)										$ 0.38	$ (0.27)