Note 3 - Cash, Cash Equivalents, and Investments (Tables)

9 Months Ended

Jun. 30, 2021

Notes Tables

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2021		September 30, 2020
Less than one year	$	10,864,831	$	10,582,527
1-5 years		26,721,221		25,143,000
Total	$	37,586,052	$	35,725,527