Note 6 - Reportable Segments (Details Textual)	3 Months Ended								12 Months Ended
	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)
Number of Reportable Segments									2
Goodwill, Impairment Loss	$ 13,400,000								$ 13,400,000
Revenue from Contract with Customer, Including Assessed Tax	$ 10,428,000	$ 10,712,000	$ 14,518,000	$ 12,997,000	$ 10,252,000	$ 9,338,000	$ 11,007,000	$ 10,106,000	48,655,000	40,703,000	41,384,000
Traditional Business [Member]
Revenue from Contract with Customer, Including Assessed Tax									17,093,000	17,172,000	17,570,000
Traditional Business [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax									11,844,000	11,771,000	11,916,000
Traditional Business [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax									5,249,000	5,401,000	5,654,000
Journal Technologies [Member]
Revenue from Contract with Customer, Including Assessed Tax									31,562,000	23,531,000	23,814,000
Journal Technologies [Member] | Transferred at Point in Time [Member]
Revenue from Contract with Customer, Including Assessed Tax									12,353,000	7,437,000	8,618,000
Journal Technologies [Member] | Transferred over Time [Member]
Revenue from Contract with Customer, Including Assessed Tax									$ 19,209,000	$ 16,094,000	$ 15,196,000