Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Sales	$ 60,717	$ 65,896	$ 207,415	$ 237,536
Cost of sales	42,992	46,273	148,736	168,110
Gross profit	17,725	19,623	58,679	69,426
Operating expenses:
General and administrative	7,541	6,487	22,540	21,050
Advertising	4,327	3,221	15,435	17,385
Depreciation	710	622	2,051	1,791
Total operating expenses	12,578	10,330	40,026	40,226
Income from operations	5,147	9,293	18,653	29,200
Other income:
Interest income, net	84	73	243	229
Other, net	287	345	741	938
Total other income	371	418	984	1,167
Income before provision for income taxes	5,518	9,711	19,637	30,367
Provision for income taxes	1,261	2,100	4,603	6,576
Net income	$ 4,257	$ 7,611	$ 15,034	$ 23,791
Net income per common share:
Basic (in USD per Share)	$ 0.21	$ 0.38	$ 0.75	$ 1.19
Diluted (in USD per Share)	$ 0.21	$ 0.38	$ 0.74	$ 1.18
Basic (in shares)	20,208	20,094	20,165	20,047
Diluted (in shares)	20,329	20,104	20,365	20,100
Cash dividends declared per common share (in USD per Share)	$ 0.30	$ 0.28	$ 0.90	$ 0.84