Note 11 - Operating Segments - Deferred Revenue Obligations (Details)	6 Months Ended
	Mar. 31, 2019 USD ($)
Subscription and Circulation [Member]
Deferred revenue	$ 3,174,000
Deferred Revenue, Additions	2,415,000
Deferred Revenue, Revenue Recognized	(2,611,000)
Deferred revenue	2,978,000
Installation Contracts [Member]
Deferred revenue	2,554,000
Deferred Revenue, Additions	1,343,000
Deferred Revenue, Revenue Recognized	(1,469,000)
Deferred revenue	2,428,000
License and Maintenance [Member]
Deferred revenue	14,362,000
Deferred Revenue, Additions	9,121,000
Deferred Revenue, Revenue Recognized	(8,901,000)
Deferred revenue	$ 14,582,000