Accounts Receivable and Credit Losses (Credit Quality Analysis of Financing Receivable) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 45,747	$ 50,025	$ 50,296
Institutional Loans, Past Due		24,276	19,684
Institutional Loans, Current		25,749	30,612
Total Institutional Loans	45,747	50,025	50,296
Financing Receivables 1 To 30 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	557
2017	344
2018	260
2019	386
2020	242
2021	656
Total	2,445
Institutional Loans, Past Due		7,192	3,484
Total Institutional Loans	2,445
Financing Receivables 31 To 60 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	171
2017	302
2018	298
2019	98
2020	245
2021	25
Total	1,139
Total Institutional Loans	1,139
Financing Receivables 61 To 90 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	1,868
2017	744
2018	672
2019	605
2020	356
2021	67
Total	4,312
Institutional Loans, Past Due		1,547	1,673
Total Institutional Loans	4,312
Financing Receivables 91 To 120 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	120
2017	139
2018	22
2019	134
2020	172
2021	0
Total	587
Total Institutional Loans	587
Financing Receivables 121 To 150 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	401
2017	351
2018	129
2019	143
2020	158
2021	28
Total	1,210
Total Institutional Loans	1,210
Financing Receivables Greater Than 90 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Institutional Loans, Past Due		$ 13,782	$ 13,382
Financing Receivables Greater Than 150 Days Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	5,994
2017	2,369
2018	1,512
2019	950
2020	313
2021	116
Total	11,254
Total Institutional Loans	11,254
Financing Receivable Past Due [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	9,111
2017	4,249
2018	2,893
2019	2,316
2020	1,486
2021	892
Total	20,947
Total Institutional Loans	20,947
Financing Receivable Current [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	5,114
2017	3,243
2018	2,322
2019	2,002
2020	1,955
2021	10,164
Total	24,800
Total Institutional Loans	24,800
Financing Receivable Gross [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	14,225
2017	7,492
2018	5,215
2019	4,318
2020	3,441
2021	11,056
Total	45,747
Total Institutional Loans	$ 45,747