Note 10 - Operating Segments - Deferred Revenue Obligations (Details)	6 Months Ended
	Mar. 31, 2020 USD ($)
Subscription and Circulation [Member]
Deferred revenue	$ 3,195,000
Deferred Revenue, Additions	2,287,000
Deferred Revenue, Revenue Recognized	(2,598,000)
Deferred revenue	2,884,000
Installation Contracts [Member]
Deferred revenue	1,932,000
Deferred Revenue, Additions	1,471,000
Deferred Revenue, Revenue Recognized	(2,295,000)
Deferred revenue	1,108,000
License and Maintenance [Member]
Deferred revenue	16,057,000
Deferred Revenue, Additions	7,738,000
Deferred Revenue, Revenue Recognized	(10,338,000)
Deferred revenue	$ 13,457,000