Note 11 - Operating Segments (Details Textual) - USD ($)	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer, Including Assessed Tax	$ 11,528,000	$ 10,420,000
Product Concentration Risk [Member] | Revenue Benchmark [Member] | Non-US [Member]
Concentration Risk, Percentage	6.00%
Traditional Business [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 3,574,000	3,529,000
Traditional Business [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	2,464,000	2,326,000
Traditional Business [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	1,110,000	1,203,000
Journal Technologies [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 7,954,000	$ 6,891,000
Journal Technologies [Member] | Product Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	69.00%	66.00%
Journal Technologies [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 3,476,000	$ 1,869,000
Journal Technologies [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 4,478,000	$ 5,022,000