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Note 4 - Revenue Recognition - Contract Asset and Contract Liabilities (Details) - USD ($)	3 Months Ended
	Dec. 31, 2018	Sep. 30, 2018
Balance	$ 736,054
New performance obligations	297,338
Recognition of revenue as a result of satisfying performance obligations	(424,154)
Balance	609,238
Less: non-current portion	(83,255)
Current portion	525,983
Customer Deposits [Member]
Balance	199,596
New performance obligations	137,431
Recognition of revenue as a result of satisfying performance obligations	(153,693)
Balance	183,334
Less: non-current portion
Current portion	183,334	$ 199,596
Deferred Revenue [Member]
Balance	536,458
New performance obligations	159,907
Recognition of revenue as a result of satisfying performance obligations	(270,461)
Balance	425,904
Less: non-current portion	(83,255)	(76,372)
Current portion	342,649	460,086
Prepaid Maintenance Agreement [Member]
Balance	93,750
New prepaid maintenance agreements
Recognition of expense as a result of performing services	(46,875)
Balance	46,875
Less: non-current portion
Current portion at December 31, 2018	$ 46,875	$ 93,750

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Amount of increase in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, from new contract.

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