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Goodwill and Intangibles (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
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Dec. 31, 2018 | Jun. 30, 2018
Changes in the carrying amount of goodwill by reportable segment |  |
Balance at beginning of period | $ 646,643 | $ 206,135
Goodwill acquired/adjusted during the period | 4,975 | 441,689
Other, primarily currency translation | (412) | (1,181)
Balance at December 31, 2018 | 651,206 | 646,643
Service Center Based Distribution Segment [Member] |  |
Changes in the carrying amount of goodwill by reportable segment |  |
Balance at beginning of period | 203,084 | 201,740
Goodwill acquired/adjusted during the period | 0 | 2,525
Other, primarily currency translation | (412) | (1,181)
Balance at December 31, 2018 | 202,672 | 203,084
Fluid Power Businesses Segment [Member] |  |
Changes in the carrying amount of goodwill by reportable segment |  |
Balance at beginning of period | 443,559 | 4,395
Goodwill acquired/adjusted during the period | 4,975 | 439,164
Other, primarily currency translation | 0 | 0
Balance at December 31, 2018 | $ 448,534 | $ 443,559

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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 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=108376223&loc=d3e13816-109267 + Details
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- Definition Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments 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 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=84229725&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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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