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Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Goodwill and other intangible assets impairments | $ 15,600 | $ 14,600 | $ 30,227 |  |
Goodwill, Gross |  |  | 1,081,452 | $ 1,084,064 | $ 1,085,855
Goodwill, Accumulated Impairment Loss |  |  | 810,872 | 784,053 | 784,053
Goodwill |  |  | 270,580 | 300,011 | 301,802
Goodwill, Period Increase (Decrease) |  |  | (2,612) | (1,791) |
Industrial [Member] |  |  |  |  |
Goodwill, Gross |  |  | 407,784 | 409,912 | 411,458
Goodwill, Accumulated Impairment Loss |  |  | (137,204) | (137,204) | (137,204)
Goodwill |  |  | 270,580 | 272,708 | 274,254
Goodwill, Period Increase (Decrease) |  |  | (2,128) | (1,546) |
Infrastructure [Member] |  |  |  |  |
Goodwill, Gross |  |  | 633,211 | 633,211 | 633,211
Goodwill, Accumulated Impairment Loss |  |  | (633,211) | (633,211) | (633,211)
Goodwill |  |  | 0 | 0 | $ 0
Goodwill, Period Increase (Decrease) |  |  | $ 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://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=77989000&loc=SL49117168-202975 Reference 2: 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 before 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 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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