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Organization, Basis of Presentation, and Summary of Significant Accounting Policies Concentration of Credit and Business Risk (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2017 USD ($) dealer	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 28, 2017 USD ($)	Apr. 02, 2015 USD ($)
Concentration Risk [Line Items]
Capitalized offering costs			$ (1,498)
Total debt	$ 53,403	$ 71,086
Concentration risk, credit risk, line of credit period	14 days
Number of independent dealers | dealer	205
Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk percentage	6.80%	5.30%	4.70%
Unit Volume [Member]
Concentration Risk [Line Items]
Concentration risk percentage	40.60%	31.90%	33.70%
Secured Debt [Member]
Concentration Risk [Line Items]
Total debt				$ 160,000	$ 80,000
Additional Paid-in Capital [Member]
Concentration Risk [Line Items]
Capitalized offering costs			$ (1,498)

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Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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