Goodwill and intangibles.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for purchase accounting adjustments.

+ References

No definition available.

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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
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- Definition

Fair value portion of 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 820
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of loss from the write-down 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 350
-SubTopic 20
-Section 50
-Paragraph 2
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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=84229725&loc=d3e961-128460

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Amount of transfers into (out 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

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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

No definition available.

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- Definition

Amount after accumulated amortization of finite-lived and indefinite-lived intangible assets classified as other.

+ References

No definition available.

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- Definition

Amount of fair value of reporting unit in excess of carrying amount.

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No definition available.

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Percentage of fair value of reporting unit in excess of carrying amount.

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No definition available.

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Goodwill and Intangibles Textuals (Details) $ in Thousands	12 Months Ended
Goodwill and Intangibles Textuals (Details) $ in Thousands	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)
Goodwill Textuals
Amortization of intangibles	$ 24,371	$ 25,580	$ 25,797
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	20.00%
Goodwill Impairment	$ 0	64,794	0
Goodwill	206,135	$ 202,700	254,406
Goodwill and Intangibles (Textuals) [Abstract]
Amortization Expense for For 2018	22,500
Amortization Expense for For 2019	20,700
Amortization Expense for For 2020	18,900
Amortization Expense for For 2021	17,400
Amortization Expense for For 2022	$ 15,100
Goodwill [Member]
Goodwill Textuals
Number of Reporting Units		5
Goodwill [Member]
Goodwill Textuals
Number of Reporting Units		2
Goodwill [Member]
Goodwill Textuals
Number of Reporting Units	6	7
Canada Service Centers reporting unit [Member]
Goodwill Textuals
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount				$ 8,000
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount				5.00%
Goodwill, Fair Value Disclosure				$ 163,000
Goodwill Impairment		$ 56,022
Australia/New Zealand reporting unit [Member]
Goodwill Textuals
Goodwill Impairment		8,772
U.S. Service Centers reporting unit [Member]
Goodwill Textuals
Goodwill, Transfers	$ 2,628
HUB acquisition measurement period adjustment impact [Member]
Goodwill Textuals
Amortization of intangibles	156
Service Center Based Distribution Segment [Member]
Goodwill Textuals
Goodwill, Purchase Accounting Adjustments	3,220
Amortization of intangibles	18,669	19,595	19,561
Goodwill Impairment	0	64,794	0
Goodwill	201,740	198,486	253,477
Accumulated goodwill impairment losses	64,794
Fluid Power Businesses Segment [Member]
Goodwill Textuals
Goodwill Impairment		0
Goodwill	4,395	$ 4,214	$ 929
Accumulated goodwill impairment losses	36,605
Customer Relationships [Member]
Goodwill Textuals
Finite-Lived Intangible Assets, Purchase Accounting Adjustments	2,636
Trade Names [Member]
Goodwill Textuals
Finite-Lived Intangible Assets, Purchase Accounting Adjustments	$ 584
Reliance U.S. businesses [Member]
Goodwill Textuals
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	149.00%
Other Intangible Assets, Net	$ 15,657
Reliance Canada businesses [Member]
Goodwill Textuals
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	13.00%
Other Intangible Assets, Net	$ 80,228