Note 3 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Property, Plant, and Equipment, Useful Lives [Table Text Block]

Buildings (in years)		25
Machinery and equipment (in years)	5	-	15
Office furniture and equipment (in years)	2	-	7
Leasehold improvements (in years)	4	-	5
Software (in years)		5

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Years Ended December 31,
	2022		2021
Net income (numerator)	$	3,282,000	$	6,756,000
Shares (denominator):
Basic weighted average common shares outstanding		12,713,533		13,225,628
Add: Dilutive effect of common stock options		67,471		273,814
Diluted weighted average common shares outstanding		12,781,004		13,499,442
Earnings per common share:
Basic	$	0.26	$	0.51
Diluted	$	0.26	$	0.50