Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Cash, Cash Equivalents and Investments (Details Textual)

v3.8.0.1
Note 3 - Cash, Cash Equivalents and Investments (Details Textual)
6 Months Ended
Mar. 31, 2018
Maximum [Member]  
Held-to-maturity Securities, Investment Term 5 years