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Goodwill and Intangible Assets Goodwill (Details) $ in Thousands | 3 Months Ended
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Dec. 31, 2019 USD ($)
Goodwill [Line Items] |
Goodwill | $ 50,622
Goodwill, Written off Related to Sale of Business Unit | 0
Goodwill, Purchase Accounting Adjustments | 0
Goodwill | 50,622
Commercial and Industrial [Member] |
Goodwill [Line Items] |
Goodwill | 6,976
Goodwill, Written off Related to Sale of Business Unit | 0
Goodwill, Purchase Accounting Adjustments | 0
Goodwill | 6,976
Residential [Member] |
Goodwill [Line Items] |
Goodwill | 10,018
Goodwill, Written off Related to Sale of Business Unit | 0
Goodwill, Purchase Accounting Adjustments |
Goodwill | 10,018
Infrastructure Solutions [Member] |
Goodwill [Line Items] |
Goodwill | 30,812
Goodwill, Written off Related to Sale of Business Unit | 0
Goodwill, Purchase Accounting Adjustments | 0
Goodwill | 30,812
Communications [Member] |
Goodwill [Line Items] |
Goodwill | 2,816
Goodwill, Written off Related to Sale of Business Unit | 0
Goodwill, Purchase Accounting Adjustments | 0
Goodwill | $ 2,816

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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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