XML 77 R63.htm IDEA: XBRL DOCUMENT v3.10.0.1
Note 10 - Accrued and Other Liabilities - Changes in Warranty Reserve (Details) - USD ($)
12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Beginning balance $ 104,518 $ 243,423
Warranty provision 6,093 (70,946)
Warranty settlements (11,395) (67,959)
Ending balance $ 99,216 $ 104,518