Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 7,997	$ 8,460	$ 15,499	$ 17,355
Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(589)		(1,048)
SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	5,391		11,259
SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	468		1,103
MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	2,727		4,185
Product and other total
Disaggregation of Revenue [Line Items]
Revenues	1,796	2,690	3,547	5,713
Product and other total | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(348)		(576)
Product and other total | SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	1,489		3,006
Product and other total | SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	159		414
Product and other total | MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	496		703
Hardware
Disaggregation of Revenue [Line Items]
Revenues	1,006		1,857
Hardware | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(189)		(300)
Hardware | SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	784		1,598
Hardware | SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	35		174
Hardware | MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	376		385
Software
Disaggregation of Revenue [Line Items]
Revenues	703		1,541
Software | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(159)		(276)
Software | SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	618		1,260
Software | SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	124		239
Software | MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	120		318
Shipping
Disaggregation of Revenue [Line Items]
Revenues	87		149
Shipping | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	0		0
Shipping | SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	87		148
Shipping | SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	0		1
Shipping | MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	0		0
Services total
Disaggregation of Revenue [Line Items]
Revenues	6,201	$ 5,770	11,952	$ 11,642
Services total | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(241)		(472)
Services total | SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	3,902		8,253
Services total | SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	309		689
Services total | MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	2,231		3,482
Support
Disaggregation of Revenue [Line Items]
Revenues	2,841		5,032
Support | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	(241)		(472)
Support | SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	1,961		3,948
Support | SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	145		334
Support | MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	976		1,222
Hosting
Disaggregation of Revenue [Line Items]
Revenues	1,690		3,246
Hosting | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	0		0
Hosting | SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	1,062		2,116
Hosting | SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	115		264
Hosting | MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	513		866
Events
Disaggregation of Revenue [Line Items]
Revenues	1,630		3,551
Events | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	0		0
Events | SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	850		2,081
Events | SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	38		76
Events | MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	742		1,394
Installs and training
Disaggregation of Revenue [Line Items]
Revenues	40		123
Installs and training | Intersegment Eliminations
Disaggregation of Revenue [Line Items]
Revenues	0		0
Installs and training | SOFO | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	29		108
Installs and training | SFI | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	11		15
Installs and training | MSKK | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	$ 0		$ 0