Acquisitions - Summary of Unaudited Consolidated Results of Operations, Including Proforma Results (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
As Reported
Net sales	$ 243,049			$ 221,659			$ 736,930	$ 649,504
Net income	$ (3,398)	$ 6,859	$ 6,195	$ 16,619	$ 10,941	$ 5,269	$ 9,656	$ 32,828
Basic (in dollars per share)	$ (0.06)			$ 0.31			$ 0.18	$ 0.64
Diluted (in dollars per share)	$ (0.06)			$ 0.30			$ 0.17	$ 0.62
Pro Forma
Net sales				$ 234,751				$ 687,203
Net income				$ 11,335				$ 16,496
Basic, Pro Forma (in dollars per share)				$ 0.21				$ 0.32
Diluted, Pro Forma (in dollars per share)				$ 0.21				$ 0.31