Accounts Receivable and Credit Losses (Credit Quality Analysis of Financing Receivable) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	$ 15,240	$ 12,219	$ 16,912
Four Years Before	2,976	3,481	4,948
Three Years Before	2,193	3,238	3,669
Two Years Before	12,383	2,280	2,565
Year Before	7,780	13,440	15,698
Origination Year	2,850	7,723	2,011
Total	43,422	42,381	45,803
Total Institutional Loans	43,422	42,381	45,803
Financing Receivables 1 To 30 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	232	104	149
Four Years Before	151	140	60
Three Years Before	38	114	145
Two Years Before	873	191	342
Year Before	1,112	699	1,498
Origination Year	989	782	33
Total	3,395	2,030	2,227
Total Institutional Loans	3,395	2,030	2,227
Financing Receivables 31 To 60 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	106	278	52
Four Years Before	172	38	257
Three Years Before	264	214	230
Two Years Before	199	145	19
Year Before	646	691	462
Origination Year	0	332	101
Total	1,387	1,698	1,121
Total Institutional Loans	1,387	1,698	1,121
Financing Receivables 61 To 90 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	7	58	25
Four Years Before	11	29	66
Three Years Before	3	217	0
Two Years Before	299	8	19
Year Before	35	668	227
Origination Year	0	273	86
Total	355	1,253	423
Total Institutional Loans	355	1,253	423
Financing Receivables 91 To 120 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	62	97	124
Four Years Before	0	139	16
Three Years Before	3	113	131
Two Years Before	1,063	45	12
Year Before	24	670	467
Origination Year	0	14	0
Total	1,152	1,078	750
Total Institutional Loans	1,152	1,078	750
Financing Receivables 121 To 150 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	390	17	545
Four Years Before	146	30	13
Three Years Before	72	20	38
Two Years Before	409	41	2
Year Before	244	206	323
Origination Year	0	81	0
Total	1,261	395	921
Total Institutional Loans	1,261	395	921
Financing Receivables Greater Than 150 Days Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	7,472	6,978	9,347
Four Years Before	1,175	876	1,826
Three Years Before	634	1,077	1,195
Two Years Before	1,948	683	891
Year Before	657	1,596	1,083
Origination Year	0	377	0
Total	11,886	11,587	14,342
Total Institutional Loans	11,886	11,587	14,342
Financial Asset, Past Due
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	8,269	7,532	10,242
Four Years Before	1,655	1,252	2,238
Three Years Before	1,014	1,755	1,739
Two Years Before	4,791	1,113	1,285
Year Before	2,718	4,530	4,060
Origination Year	989	1,859	220
Total	19,436	18,041	19,784
Total Institutional Loans	19,436	18,041	19,784
Financing Receivable Current
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	6,971	4,687	6,670
Four Years Before	1,321	2,229	2,710
Three Years Before	1,179	1,483	1,930
Two Years Before	7,592	1,167	1,280
Year Before	5,062	8,910	11,638
Origination Year	1,861	5,864	1,791
Total	23,986	24,340	26,019
Total Institutional Loans	$ 23,986	$ 24,340	$ 26,019