Note 6 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Revenues	$ 7,243	$ 8,711	$ 14,496	$ 17,876
Hardware [Member]
Revenues	1,628	1,793	2,931	3,140
Software [Member]
Revenues	490	778	1,161	1,578
Shipping [Member]
Revenues	44	15	79	29
Product and Other [Member]
Revenues	2,162	2,586	4,171	4,747
Service Support [Member]
Revenues	1,920	1,874	3,520	3,882
Service Hosting [Member]
Revenues	1,776	2,043	3,613	4,419
Service Events [Member]
Revenues	998	1,344	2,405	3,286
Service Installs and Training [Member]
Revenues	387	864	787	1,542
Service [Member]
Revenues	5,081	6,125	10,325	13,129
Intersegment Eliminations [Member]
Revenues	(699)	(625)	(1,212)	(1,185)
Intersegment Eliminations [Member] \| Hardware [Member]
Revenues	(255)	(314)	(324)	(448)
Intersegment Eliminations [Member] \| Software [Member]
Revenues	(72)	(109)	(137)	(256)
Intersegment Eliminations [Member] \| Shipping [Member]
Revenues	0	0	0	0
Intersegment Eliminations [Member] \| Product and Other [Member]
Revenues	(327)	(423)	(461)	(704)
Intersegment Eliminations [Member] \| Service Support [Member]
Revenues	(156)	(202)	(317)	(418)
Intersegment Eliminations [Member] \| Service Hosting [Member]
Revenues	(216)	0	(434)	(63)
Intersegment Eliminations [Member] \| Service Events [Member]
Revenues	0	0	0	0
Intersegment Eliminations [Member] \| Service Installs and Training [Member]
Revenues	0	0	0	0
Intersegment Eliminations [Member] \| Service [Member]
Revenues	(372)	(202)	(751)	(481)
SOFO [Member] \| Operating Segments [Member]
Revenues	5,300	5,940	11,127	12,808
SOFO [Member] \| Operating Segments [Member] \| Hardware [Member]
Revenues	1,380	1,153	2,688	2,468
SOFO [Member] \| Operating Segments [Member] \| Software [Member]
Revenues	374	653	961	1,440
SOFO [Member] \| Operating Segments [Member] \| Shipping [Member]
Revenues	40	14	74	27
SOFO [Member] \| Operating Segments [Member] \| Product and Other [Member]
Revenues	1,794	1,820	3,723	3,935
SOFO [Member] \| Operating Segments [Member] \| Service Support [Member]
Revenues	1,233	1,693	2,640	3,499
SOFO [Member] \| Operating Segments [Member] \| Service Hosting [Member]
Revenues	1,507	1,371	2,927	2,848
SOFO [Member] \| Operating Segments [Member] \| Service Events [Member]
Revenues	695	784	1,666	1,837
SOFO [Member] \| Operating Segments [Member] \| Service Installs and Training [Member]
Revenues	71	272	171	689
SOFO [Member] \| Operating Segments [Member] \| Service [Member]
Revenues	3,506	4,120	7,404	8,873
SFI [Member] \| Operating Segments [Member]
Revenues	957	817	1,824	1,469
SFI [Member] \| Operating Segments [Member] \| Hardware [Member]
Revenues	263	257	324	343
SFI [Member] \| Operating Segments [Member] \| Software [Member]
Revenues	83	119	208	220
SFI [Member] \| Operating Segments [Member] \| Shipping [Member]
Revenues	4	1	5	2
SFI [Member] \| Operating Segments [Member] \| Product and Other [Member]
Revenues	350	377	537	565
SFI [Member] \| Operating Segments [Member] \| Service Support [Member]
Revenues	122	145	256	324
SFI [Member] \| Operating Segments [Member] \| Service Hosting [Member]
Revenues	201	248	531	506
SFI [Member] \| Operating Segments [Member] \| Service Events [Member]
Revenues	4	30	28	47
SFI [Member] \| Operating Segments [Member] \| Service Installs and Training [Member]
Revenues	280	17	472	27
SFI [Member] \| Operating Segments [Member] \| Service [Member]
Revenues	607	440	1,287	904
MSKK [Member] \| Operating Segments [Member]
Revenues	1,685	2,579	2,757	4,784
MSKK [Member] \| Operating Segments [Member] \| Hardware [Member]
Revenues	240	697	243	777
MSKK [Member] \| Operating Segments [Member] \| Software [Member]
Revenues	105	115	129	174
MSKK [Member] \| Operating Segments [Member] \| Shipping [Member]
Revenues	0	0	0	0
MSKK [Member] \| Operating Segments [Member] \| Product and Other [Member]
Revenues	345	812	372	951
MSKK [Member] \| Operating Segments [Member] \| Service Support [Member]
Revenues	721	238	941	477
MSKK [Member] \| Operating Segments [Member] \| Service Hosting [Member]
Revenues	284	424	589	1,128
MSKK [Member] \| Operating Segments [Member] \| Service Events [Member]
Revenues	299	530	711	1,402
MSKK [Member] \| Operating Segments [Member] \| Service Installs and Training [Member]
Revenues	36	575	144	826
MSKK [Member] \| Operating Segments [Member] \| Service [Member]
Revenues	$ 1,340	$ 1,767	$ 2,385	$ 3,833