CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net sales	$ 238,946	$ 236,491
Cost of goods sold	97,985	101,457
Gross profit	140,961	135,034
Expenses:
Selling, general and administrative	115,154	109,762
Other expense (income), net	161	(36)
Total expenses	115,315	109,726
Income before interest and income taxes	25,646	25,308
Interest income, net	74	56
Income before income taxes	25,720	25,364
Income tax expense	6,359	5,958
Net income	19,361	19,406
Other comprehensive income
Adjustments related to retirement plans; net of tax expense of $14 in 2022 and $16 in 2021	40	49
Comprehensive income	$ 19,401	$ 19,455
Common Stock [Member]
Other comprehensive income
Basic earnings per share (in dollars per share)	$ 1.14	$ 1.07
Diluted earnings per share (in dollars per share)	1.11	1.04
Cash dividends per share (in dollars per share)	0.25	0.22
Class A Common Stock [Member]
Other comprehensive income
Basic earnings per share (in dollars per share)	1.08	1.00
Diluted earnings per share (in dollars per share)	1.05	0.98
Cash dividends per share (in dollars per share)	$ 0.23	$ 0.20