Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basic net earnings per share
Net sales	$ 280,557	$ 274,495	$ 253,216	$ 238,947	$ 265,940	$ 260,378	$ 249,989	$ 236,491	$ 1,047,215	$ 1,012,799	$ 748,252
Gross profit	159,935	156,720	146,608	140,962	150,087	148,003	141,501	135,034	604,225	574,625	418,994
Income before taxes	32,504	32,609	28,668	25,720	32,099	31,903	29,169	25,364	119,501	118,535	76,731
Net income	$ 23,738	$ 24,551	$ 21,708	$ 19,361	$ 24,306	$ 24,233	$ 22,858	$ 19,406	$ 89,358	$ 90,803	$ 59,148
Common Stock
Basic net earnings per share
Basic net earnings per share (in dollars per share)	$ 1.48	$ 1.51	$ 1.31	$ 1.14	$ 1.39	$ 1.35	$ 1.25	$ 1.07	$ 5.43	$ 5.06	$ 3.18
Diluted earnings per share (in dollars per share)	1.42	1.46	1.27	1.11	1.35	1.31	1.21	1.04	5.24	4.90	3.12
Class A Common Stock
Basic net earnings per share
Basic net earnings per share (in dollars per share)	1.40	1.43	1.25	1.08	1.31	1.28	1.18	1.00	5.17	4.75	3.04
Diluted earnings per share (in dollars per share)	$ 1.39	$ 1.40	$ 1.22	$ 1.05	$ 1.33	$ 1.25	$ 1.16	$ 0.98	$ 5.07	$ 4.69	$ 3.04