Segment and Revenue Information - Schedule of Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Revenue	$ 124,126	$ 158,444
Gross profit	29,718	61,488
R&D expense	18,536	17,448
Operating Segments
Segment Reporting Information [Line Items]
Revenue	124,126	158,444
Segment profit	11,182	44,040
Aerospace and Defense | Operating Segments
Segment Reporting Information [Line Items]
Revenue	53,306	50,838
Gross profit	5,357	13,705
R&D expense	15,543	14,616
Segment profit	(10,186)	(911)
Broadband | Operating Segments
Segment Reporting Information [Line Items]
Revenue	70,820	107,606
Gross profit	24,361	47,783
R&D expense	2,993	2,832
Segment profit	$ 21,368	$ 44,951