Segment Reporting (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022 USD ($) carrier	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) carrier	Mar. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)
Segment Reporting [Abstract]
Number of US wireless carriers | carrier	4		4
Segment Reporting Information [Line Items]
Total sales	$ 23,759	$ 12,667	$ 42,449	$ 25,416
Total gross profit (loss)	5,758	3,181	10,389	6,810
Total loss from operations	(1,165)	(3,047)	(3,066)	(4,961)
Segment assets	23,872		23,872		$ 27,312
Operating segments
Segment Reporting Information [Line Items]
Total sales	23,759	12,667	42,449	25,416
Total loss from operations	(1,165)	(3,047)	(3,066)	(4,961)
Non-allocated
Segment Reporting Information [Line Items]
Segment assets	5,326		5,326		4,973
Wireless | Operating segments
Segment Reporting Information [Line Items]
Total sales	7,766	4,334	14,885	9,581
Total gross profit (loss)	1,537	1,527	3,044	3,136
Total loss from operations	(2,203)	(1,537)	(4,528)	(2,642)
Wireless | Operating segments | Continuing Operations
Segment Reporting Information [Line Items]
Segment assets	9,290		9,290		7,867
Telco | Operating segments
Segment Reporting Information [Line Items]
Total sales	15,993	8,333	27,564	15,835
Total gross profit (loss)	4,221	1,654	7,345	3,674
Total loss from operations	1,038	$ (1,510)	1,462	$ (2,319)
Telco | Operating segments | Continuing Operations
Segment Reporting Information [Line Items]
Segment assets	$ 9,256		$ 9,256		$ 14,472