Note 5 - Revenue Recognition (Tables)

6 Months Ended

Dec. 31, 2019

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended				Six Months Ended
	December 31				December 31
	2019		2018		2019		2018
United States	$	3,081,853	$	3,172,401	$	7,585,159	$	7,006,267
Export		1,080,806		2,238,826		1,988,262		4,189,799
Net Sales	$	4,162,659	$	5,411,227	$	9,573,421	$	11,196,066