Note 12. Fair Value - Recurring Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Recurring Fair Value Measurements:
Trading Securities: Mutual funds in nonqualified SERP	$ 12,690	$ 11,774
Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Total assets at fair value	109,640	115,769
Contingent earn-out liability		360
Total liabilities at fair value		360
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Total assets at fair value	50,837	51,790
Contingent earn-out liability		0
Total liabilities at fair value		0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Total assets at fair value	57,303	62,479
Contingent earn-out liability		0
Total liabilities at fair value		0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Recurring Fair Value Measurements:
Total assets at fair value	1,500	1,500
Contingent earn-out liability		360
Total liabilities at fair value		360
Warrant \| Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Derivatives: Stock Warrants	1,500	1,500
Warrant \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Derivatives: Stock Warrants	0	0
Warrant \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Derivatives: Stock Warrants	0	0
Warrant \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Recurring Fair Value Measurements:
Derivatives: Stock Warrants	1,500	1,500
Money Market Funds \| Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Cash equivalents	38,147	40,016
Money Market Funds \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Cash equivalents	38,147	40,016
Money Market Funds \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Cash equivalents	0	0
Money Market Funds \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Recurring Fair Value Measurements:
Cash equivalents	0	0
Commercial Paper \| Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Cash equivalents	31,655	29,408
Commercial Paper \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Cash equivalents	0	0
Commercial Paper \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Cash equivalents	31,655	29,408
Commercial Paper \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Recurring Fair Value Measurements:
Cash equivalents	0	0
Certificates of Deposit
Recurring Fair Value Measurements:
Available-for-sale Securities	5,970	11,230
Certificates of Deposit \| Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Available-for-sale Securities	5,970	11,230
Certificates of Deposit \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Available-for-sale Securities	0	0
Certificates of Deposit \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Available-for-sale Securities	5,970	11,230
Certificates of Deposit \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Recurring Fair Value Measurements:
Available-for-sale Securities	0	0
Municipal Bonds
Recurring Fair Value Measurements:
Available-for-sale Securities	875	1,922
Municipal Bonds \| Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Available-for-sale Securities	875	1,922
Municipal Bonds \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Available-for-sale Securities	0	0
Municipal Bonds \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Available-for-sale Securities	875	1,922
Municipal Bonds \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Recurring Fair Value Measurements:
Available-for-sale Securities	0	0
US Treasury and Federal Agencies
Recurring Fair Value Measurements:
Available-for-sale Securities	18,803	19,919
US Treasury and Federal Agencies \| Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Available-for-sale Securities	18,803	19,919
US Treasury and Federal Agencies \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Available-for-sale Securities	0	0
US Treasury and Federal Agencies \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Available-for-sale Securities	18,803	19,919
US Treasury and Federal Agencies \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Recurring Fair Value Measurements:
Available-for-sale Securities	0	0
Mutual Fund \| Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Trading Securities: Mutual funds in nonqualified SERP	12,690	11,774
Mutual Fund \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Trading Securities: Mutual funds in nonqualified SERP	12,690	11,774
Mutual Fund \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Trading Securities: Mutual funds in nonqualified SERP	0	0
Mutual Fund \| Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3
Recurring Fair Value Measurements:
Trading Securities: Mutual funds in nonqualified SERP	$ 0	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value of financial and nonfinancial obligations.

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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