Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
Mar. 31, 2017	Jun. 30, 2016
Goodwill [Line Items]
Gross Carrying Amount	$ 57,416	$ 57,310
Accumulated Amortization	(47,283)	(45,607)
Total other intangible assets, net	10,133	11,703
Reacquired franchise rights
Goodwill [Line Items]
Gross Carrying Amount	$ 1,376	1,339
Estimated Useful Life (in years)	5 years
Weighted Average Remaining Useful Life (in years)	2 years 7 months
Dealer relationships
Goodwill [Line Items]
Gross Carrying Amount	$ 29,837	29,773
Weighted Average Remaining Useful Life (in years)	12 years 7 months 3 days
Patent
Goodwill [Line Items]
Gross Carrying Amount	$ 1,386	1,386
Estimated Useful Life (in years)	12 years
Weighted Average Remaining Useful Life (in years)	1 year 3 months 20 days
Trade name
Goodwill [Line Items]
Gross Carrying Amount	$ 24,667	24,667
Estimated Useful Life (in years)	15 years
Weighted Average Remaining Useful Life (in years)	4 years 4 months 23 days
Non-compete agreement
Goodwill [Line Items]
Gross Carrying Amount	$ 54	52
Estimated Useful Life (in years)	10 years
Weighted Average Remaining Useful Life (in years)	7 years 6 months 23 days
Backlog
Goodwill [Line Items]
Gross Carrying Amount	$ 96	$ 93
Estimated Useful Life (in years)	3 months 22 days
Weighted Average Remaining Useful Life (in years)	1 day
Minimum \| Dealer relationships
Goodwill [Line Items]
Estimated Useful Life (in years)	8 years
Maximum \| Dealer relationships
Goodwill [Line Items]
Estimated Useful Life (in years)	15 years

Finite-Lived Intangible Asset, Weighted Average Remaining Useful Life (in years)

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

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

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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