Note 10 - Operating Segments (Details Textual) - USD ($)	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer, Including Assessed Tax	$ 11,677,000	$ 10,428,000
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Non-US [Member]
Concentration Risk, Percentage	1.00%
Traditional Business [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 4,132,000	4,199,000
Traditional Business [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	2,820,000	2,861,000
Traditional Business [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	1,312,000	1,338,000
Journal Technologies [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 7,545,000	$ 6,229,000
Journal Technologies [Member] | Revenue Benchmark [Member] | Product Concentration Risk [Member]
Concentration Risk, Percentage	65.00%	60.00%
Journal Technologies [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 2,454,000	$ 1,935,000
Journal Technologies [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 5,091,000	$ 4,294,000