CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net sales	$ 179,432	$ 187,242
Cost of goods sold	79,879	84,159
Gross profit	99,553	103,083
Credit service charges	19	22
Gross profit and other revenue	99,572	103,105
Expenses:
Selling, general and administrative	97,535	98,879
Provision for doubtful accounts	34	4
Other (income) expense, net	(83)	(154)
Total expenses	97,486	98,729
Income before interest and income taxes	2,086	4,376
Interest income, net	214	349
Income before income taxes	2,300	4,725
Income tax expense	481	1,104
Net income	1,819	3,621
Other comprehensive income
Adjustments related to retirement plans; net of tax expense of $10 in 2020 and $3 in 2019	31	9
Comprehensive income	$ 1,850	$ 3,630
Class A Common Stock [Member]
Earnings per share:
Basic earnings per share (in dollars per share)	$ 0.09	$ 0.17
Diluted earnings per share (in dollars per share)	0.09	0.17
Cash dividends per share (in dollars per share)	0.19	0.17
Common Stock [Member]
Earnings per share:
Basic earnings per share (in dollars per share)	0.10	0.18
Diluted earnings per share (in dollars per share)	0.09	0.17
Cash dividends per share (in dollars per share)	$ 0.20	$ 0.18