Note 18 - Quarterly Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Quarterly Financial Information [Table Text Block]

	Year Ended December 31, 2021
	March 31,		June 30,		September 30,		December 31,
	2021		2021		2021		2021
Sales	$	23,994,004	$	26,449,885	$	26,397,857	$	27,320,481
Gross Profit		6,002,921		5,780,290		5,397,709		4,371,546
Operating Income		2,325,460		2,119,797		1,868,781		676,214
Net Income		3,143,417		1,247,305		1,197,877		64,698
Net Income per Common Share:
Basic	$	0.93	$	0.37	$	0.35	$	0.02
Diluted	$	0.93	$	0.37	$	0.35	$	0.02

	Year Ended December 31, 2020
	March 31,		June 30,		September 30,		December 31,
	2020		2020		2020		2020
Sales	$	25,281,574	$	18,576,588	$	21,277,797	$	19,933,941
Gross Profit		6,208,143		3,499,039		4,852,417		4,371,691
Operating Income		3,138,149		530,520		2,126,417		1,657,368
Net Income		2,075,570		228,837		1,426,090		2,108,890
Net Income per Common Share:
Basic	$	0.63	$	0.07	$	0.43	$	0.63
Diluted	$	0.63	$	0.07	$	0.43	$	0.63