Revenue - Timing of Revenue Recognition and Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Timing of Revenue Recognition and Geographic Areas
Revenues	$ 15,670	$ 15,375
United States
Timing of Revenue Recognition and Geographic Areas
Revenues	15,237	13,943
Americas (excluding United States)
Timing of Revenue Recognition and Geographic Areas
Revenues	247	609
Europe
Timing of Revenue Recognition and Geographic Areas
Revenues	181	451
Asia-Pacific
Timing of Revenue Recognition and Geographic Areas
Revenues	5	372
Finance
Timing of Revenue Recognition and Geographic Areas
Finance	2	1
High Performance Products Segment
Timing of Revenue Recognition and Geographic Areas
Revenues	430	712
High Performance Products Segment \| United States
Timing of Revenue Recognition and Geographic Areas
Revenues	422	693
High Performance Products Segment \| Americas (excluding United States)
Timing of Revenue Recognition and Geographic Areas
Revenues	3
High Performance Products Segment \| Europe
Timing of Revenue Recognition and Geographic Areas
Revenues		1
High Performance Products Segment \| Asia-Pacific
Timing of Revenue Recognition and Geographic Areas
Revenues	5	18
Technology Solutions Segment
Timing of Revenue Recognition and Geographic Areas
Revenues	15,240	14,663
Technology Solutions Segment \| United States
Timing of Revenue Recognition and Geographic Areas
Revenues	14,815	13,250
Technology Solutions Segment \| Americas (excluding United States)
Timing of Revenue Recognition and Geographic Areas
Revenues	244	609
Technology Solutions Segment \| Europe
Timing of Revenue Recognition and Geographic Areas
Revenues	181	450
Technology Solutions Segment \| Asia-Pacific
Timing of Revenue Recognition and Geographic Areas
Revenues		354
Technology Solutions Segment \| Finance
Timing of Revenue Recognition and Geographic Areas
Finance	2	1
Technology Solutions Segment \| United Kingdom
Timing of Revenue Recognition and Geographic Areas
Revenues	180	381
Technology Solutions Segment \| United Kingdom \| United States
Timing of Revenue Recognition and Geographic Areas
Revenues	72
Technology Solutions Segment \| United Kingdom \| Americas (excluding United States)
Timing of Revenue Recognition and Geographic Areas
Revenues		25
Technology Solutions Segment \| United Kingdom \| Europe
Timing of Revenue Recognition and Geographic Areas
Revenues	108	356
Technology Solutions Segment \| U.S
Timing of Revenue Recognition and Geographic Areas
Revenues	15,060	14,282
Technology Solutions Segment \| U.S \| United States
Timing of Revenue Recognition and Geographic Areas
Revenues	14,743	13,250
Technology Solutions Segment \| U.S \| Americas (excluding United States)
Timing of Revenue Recognition and Geographic Areas
Revenues	244	584
Technology Solutions Segment \| U.S \| Europe
Timing of Revenue Recognition and Geographic Areas
Revenues	73	94
Technology Solutions Segment \| U.S \| Asia-Pacific
Timing of Revenue Recognition and Geographic Areas
Revenues		354
Technology Solutions Segment \| U.S \| Finance
Timing of Revenue Recognition and Geographic Areas
Finance	2	1
Technology Solutions Segment \| U.S \| CSPi as principal
Timing of Revenue Recognition and Geographic Areas
Finance		1,400
Technology Solutions Segment \| U.S \| CSPi as agent
Timing of Revenue Recognition and Geographic Areas
Finance	23
Transferred at a point in time where CSPi is principal
Timing of Revenue Recognition and Geographic Areas
Revenues	11,130	11,590
Transferred at a point in time where CSPi is principal \| High Performance Products Segment
Timing of Revenue Recognition and Geographic Areas
Revenues	82	503
Transferred at a point in time where CSPi is principal \| Technology Solutions Segment
Timing of Revenue Recognition and Geographic Areas
Revenues	11,048	11,087
Transferred at a point in time where CSPi is principal \| Technology Solutions Segment \| United Kingdom
Timing of Revenue Recognition and Geographic Areas
Revenues	133	312
Transferred at a point in time where CSPi is principal \| Technology Solutions Segment \| U.S
Timing of Revenue Recognition and Geographic Areas
Revenues	10,915	10,775
Transferred at a point in time where CSPi is agent
Timing of Revenue Recognition and Geographic Areas
Revenues	1,804	1,199
Transferred at a point in time where CSPi is agent \| Technology Solutions Segment
Timing of Revenue Recognition and Geographic Areas
Revenues	1,804	1,199
Transferred at a point in time where CSPi is agent \| Technology Solutions Segment \| United Kingdom
Timing of Revenue Recognition and Geographic Areas
Revenues		4
Transferred at a point in time where CSPi is agent \| Technology Solutions Segment \| U.S
Timing of Revenue Recognition and Geographic Areas
Revenues	1,804	1,195
Transferred over time where CSPi is principal
Timing of Revenue Recognition and Geographic Areas
Revenues	2,736	2,586
Transferred over time where CSPi is principal \| High Performance Products Segment
Timing of Revenue Recognition and Geographic Areas
Revenues	348	209
Transferred over time where CSPi is principal \| Technology Solutions Segment
Timing of Revenue Recognition and Geographic Areas
Revenues	2,388	2,377
Transferred over time where CSPi is principal \| Technology Solutions Segment \| United Kingdom
Timing of Revenue Recognition and Geographic Areas
Revenues	47	65
Transferred over time where CSPi is principal \| Technology Solutions Segment \| U.S
Timing of Revenue Recognition and Geographic Areas
Revenues	$ 2,341	$ 2,312