Note 11 - Operating Segments (Details Textual) - USD ($)	3 Months Ended			6 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Revenue from Contract with Customer, Including Assessed Tax	$ 10,712,000		$ 9,338,000	$ 21,140,000	$ 19,590,000
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	4,005,000			8,204,000
Traditional Business [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	2,732,000			5,593,000
Traditional Business [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	1,273,000			2,611,000
Journal Technologies [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 6,707,000			$ 12,936,000
Journal Technologies [Member] | Revenue Benchmark [Member] | Product Concentration Risk [Member]
Concentration Risk, Percentage	63.00%		55.00%	61.00%	58.00%
Journal Technologies [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 2,100,000			$ 4,035,000
Journal Technologies [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 4,607,000			$ 8,901,000