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Goodwill and Intangible Assets - Goodwill RollForward (Details) $ in Thousands | 9 Months Ended
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Jun. 30, 2017 USD ($)
Goodwill [Line Items] |
Goodwill, Beginning Balance | $ 39,936
Acquisitions | 5,460
Divestitures | (51)
Goodwill Purchase Accounting Adjustments | (312)
Goodwill, Ending Balance | 45,033
Residential [Member] |
Goodwill [Line Items] |
Goodwill, Beginning Balance | 8,631
Goodwill, Ending Balance | 8,631
Commercial & Industrial [Member] |
Goodwill [Line Items] |
Goodwill, Beginning Balance | 3,806
Acquisitions | 1,640
Goodwill Purchase Accounting Adjustments | (41)
Goodwill, Ending Balance | 5,405
Infrastructure Solutions [Member] |
Goodwill [Line Items] |
Goodwill, Beginning Balance | 27,499
Acquisitions | 3,820
Divestitures | (51)
Goodwill Purchase Accounting Adjustments | (271)
Goodwill, Ending Balance | $ 30,997

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e961-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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