Note 16. Credit Quality and Allowance for Credit Losses of Notes Receivable - Textuals (Details) - USD ($)	Dec. 31, 2018	Jun. 30, 2018
Notes Receivable
Notes Receivable
Financing Receivable, Recorded Investment, Past Due	$ 0	$ 0

Recorded Investment in financing receivables that are past due at the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524

Name:	us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant