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

9 Months Ended

Jun. 30, 2020

Notes Tables

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2020		September 30, 2019
Less than one year	$	11,093,527	$	13,524,270
1-5 years		28,072,000		23,902,000
Total	$	39,165,527	$	37,426,270