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Goodwill and Intangible Assets Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Goodwill [Line Items] |  |  |
Goodwill, beginning | $ 92,395 | $ 53,763 |
Goodwill, Acquired During Period |  | 38,632 |
Impairment expense | 0 | 0 | $ (6,976)
Goodwill, ending | 92,395 | 92,395 | 53,763
Communications [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, beginning | 2,816 | 2,816 |
Goodwill, ending | 2,816 | 2,816 | 2,816
Residential [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, beginning | 51,370 | 16,219 |
Goodwill, Acquired During Period |  | 35,151 |
Goodwill, ending | 51,370 | 51,370 | 16,219
Infrastructure Solutions [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, beginning | 38,209 | 34,728 |
Goodwill, Acquired During Period |  | 3,481 |
Goodwill, ending | 38,209 | 38,209 | 34,728
Commercial and Industrial [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, beginning | 0 | 0 |
Impairment expense |  |  | (6,976)
Goodwill, ending | $ 0 | $ 0 | $ 0

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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