Note 13. Investments - Schedule of Contractual Maturities on Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Certificates of Deposit
Schedule of Investments [Line Items]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	$ 5,220
Available-for-sale Securities, Debt Maturities, Rolling Year Two	750
Available-for-sale Securities	5,970	$ 11,230
Municipal Bonds
Schedule of Investments [Line Items]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	875
Available-for-sale Securities, Debt Maturities, Rolling Year Two	0
Available-for-sale Securities	875	1,922
US Treasury and Federal Agency Securities
Schedule of Investments [Line Items]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	18,803
Available-for-sale Securities, Debt Maturities, Rolling Year Two	0
Available-for-sale Securities	$ 18,803	$ 19,919