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Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Jun. 30, 2018
Segment Reporting Information [Line Items] |  |  |
Net Sales | $ 864,515 | $ 680,701 |
Segment financial information |  |  |
Operating income for reportable segments | 66,339 | 51,837 |
Assets used in business | 2,305,688 |  | $ 2,285,741
Depreciation and amortization of property | 4,981 | 3,927 |
Capital expenditures | 3,173 | 6,336 |
Service Center Based Distribution [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 604,049 | 568,913 |
Segment financial information |  |  |
Operating income for reportable segments | 62,809 | 59,247 |
Assets used in business | 1,227,815 | 1,182,784 |
Depreciation and amortization of property | 3,911 | 3,669 |
Capital expenditures | 2,444 | 5,548 |
Fluid Power Businesses [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 260,466 | 111,788 |
Segment financial information |  |  |
Operating income for reportable segments | 30,880 | 13,202 |
Assets used in business | 1,077,873 | 202,123 |
Depreciation and amortization of property | 1,070 | 258 |
Capital expenditures | 729 | 788 |
Operating Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 864,515 | 680,701 |
Segment financial information |  |  |
Operating income for reportable segments | 93,689 | 72,449 |
Assets used in business | 2,305,688 | 1,384,907 |
Depreciation and amortization of property | 4,981 | 3,927 |
Capital expenditures | $ 3,173 | $ 6,336 |

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