Note 11 - Operating Segments (Details Textual) - USD ($)	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenue from Contract with Customer, Including Assessed Tax	$ 10,420,000	$ 11,677,000
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Non-US [Member]
Concentration Risk, Percentage	4.00%
Traditional Business [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 3,529,000	4,132,000
Traditional Business [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	2,326,000	2,820,000
Traditional Business [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	1,203,000	1,312,000
Journal Technologies [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 6,891,000	$ 7,545,000
Journal Technologies [Member] | Revenue Benchmark [Member] | Product Concentration Risk [Member]
Concentration Risk, Percentage	66.00%	65.00%
Journal Technologies [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 1,869,000	$ 2,454,000
Journal Technologies [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 5,022,000	$ 5,091,000