Accounts Receivable and Credit Losses (Credit Quality Analysis of Financing Receivable) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 42,381	$ 46,013
Total Institutional Loans	42,381	46,013
Financing Receivables 1 To 30 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	104	297
Four Years Before	140	7
Three Years Before	114	320
Two Years Before	191	559
Year Before	699	135
Origination Year	782	1,616
Total	2,030	2,934
Total Institutional Loans	2,030	2,934
Financing Receivables 31 To 60 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	278	145
Four Years Before	38	2
Three Years Before	214	165
Two Years Before	145	49
Year Before	691	61
Origination Year	332	660
Total	1,698	1,082
Total Institutional Loans	1,698	1,082
Financing Receivables 61 To 90 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	58	24
Four Years Before	29	310
Three Years Before	217	92
Two Years Before	8	102
Year Before	668	69
Origination Year	273	95
Total	1,253	692
Total Institutional Loans	1,253	692
Financing Receivables 91 To 120 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	97	287
Four Years Before	139
Three Years Before	113	131
Two Years Before	45	16
Year Before	670	47
Origination Year	14	13
Total	1,078	494
Total Institutional Loans	1,078	494
Financing Receivables 121 To 150 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	17	43
Four Years Before	30	31
Three Years Before	20	133
Two Years Before	41	42
Year Before	206	256
Origination Year	81	108
Total	395	613
Total Institutional Loans	395	613
Financing Receivables Greater Than 150 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	6,978	7,468
Four Years Before	876	2,973
Three Years Before	1,077	1,919
Two Years Before	683	1,431
Year Before	1,596	475
Origination Year	377	872
Total	11,587	15,138
Total Institutional Loans	11,587	15,138
Financial Asset, Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	7,532	8,264
Four Years Before	1,252	3,323
Three Years Before	1,755	2,760
Two Years Before	1,113	2,199
Year Before	4,530	1,043
Origination Year	1,859	3,364
Total	18,041	20,953
Total Institutional Loans	18,041	20,953
Financing Receivable Current [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	4,687	4,565
Four Years Before	2,229	1,955
Three Years Before	1,483	2,601
Two Years Before	1,167	1,586
Year Before	8,910	1,548
Origination Year	5,864	12,805
Total	24,340	25,060
Total Institutional Loans	24,340	25,060
Financing Receivable Gross [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	12,219	12,829
Four Years Before	3,481	5,278
Three Years Before	3,238	5,361
Two Years Before	2,280	3,785
Year Before	13,440	2,591
Origination Year	7,723	16,169
Total	42,381	46,013
Total Institutional Loans	$ 42,381	$ 46,013