Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

	December 31,
	2021		2020
Earned over time	$	39,786,609	$	43,391,176
Point in time		64,375,618		41,678,724
Total revenue		104,162,227	$	85,069,900

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

Class	Method	Estimated Useful Lives (years)
Buildings & Improvements	Straight-line	10	to	40
Machinery and equipment	Straight-line	3	to	20