Note 11 - Operating Segments (Details Textual) - USD ($)	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Revenue from Contract with Customer, Including Assessed Tax	$ 10,428,000	$ 10,252,000
Product Concentration Risk [Member] | Sales Revenue, Net [Member]
Concentration Risk, Percentage	60.00%	60.00%
Product Concentration Risk [Member] | Sales Revenue, Net [Member] | Non-US [Member]
Concentration Risk, Percentage	1.00%
Traditional Business [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 4,199,000
Traditional Business [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	2,861,000
Traditional Business [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	1,338,000
Journal Technologies [Member]
Revenue from Contract with Customer, Including Assessed Tax	6,229,000
Journal Technologies [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	1,935,000
Journal Technologies [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 4,294,000