Note 10 - Operating Segments - Deferred Revenue Obligations (Details)	3 Months Ended
	Dec. 31, 2019 USD ($)
Subscription and Circulation [Member]
Deferred revenue	$ 3,195,000
Deferred Revenue, Additions	1,009,000
Deferred Revenue, Revenue Recognized	(1,312,000)
Deferred revenue	2,892,000
Installation Contracts [Member]
Deferred revenue	1,932,000
Deferred Revenue, Additions	888,000
Deferred Revenue, Revenue Recognized	(808,000)
Deferred revenue	2,012,000
License and Maintenance [Member]
Deferred revenue	16,057,000
Deferred Revenue, Additions	4,016,000
Deferred Revenue, Revenue Recognized	(5,091,000)
Deferred revenue	$ 14,982,000