Fair Value - Recurring Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Recurring Fair Value Measurements:
Trading Securities: Mutual funds in nonqualified SERP	$ 14,049	$ 11,975
Certificates of Deposit
Recurring Fair Value Measurements:
Available-for-sale securities: Secondary market certificates of deposit		5,294
Fair Value, Measurements, Recurring
Recurring Fair Value Measurements:
Total assets at fair value	34,311	109,804
Contingent earn-out liability	20,190
Total liabilities at fair value	20,190
Fair Value, Measurements, Recurring \| Stock Warrant
Recurring Fair Value Measurements:
Derivatives: Stock warrants	1,500	1,500
Fair Value, Measurements, Recurring \| Money Market Funds
Recurring Fair Value Measurements:
Cash equivalents: Money market funds	18,762	91,035
Fair Value, Measurements, Recurring \| Certificates of Deposit
Recurring Fair Value Measurements:
Available-for-sale securities: Secondary market certificates of deposit		5,294
Fair Value, Measurements, Recurring \| Mutual Fund
Recurring Fair Value Measurements:
Trading Securities: Mutual funds in nonqualified SERP	14,049	11,975
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1
Recurring Fair Value Measurements:
Total assets at fair value	32,811	103,010
Contingent earn-out liability	0
Total liabilities at fair value	0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1 \| Stock Warrant
Recurring Fair Value Measurements:
Derivatives: Stock warrants	0	0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1 \| Money Market Funds
Recurring Fair Value Measurements:
Cash equivalents: Money market funds	18,762	91,035
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1 \| Certificates of Deposit
Recurring Fair Value Measurements:
Available-for-sale securities: Secondary market certificates of deposit		0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 1 \| Mutual Fund
Recurring Fair Value Measurements:
Trading Securities: Mutual funds in nonqualified SERP	14,049	11,975
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2
Recurring Fair Value Measurements:
Total assets at fair value	0	5,294
Contingent earn-out liability	0
Total liabilities at fair value	0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2 \| Stock Warrant
Recurring Fair Value Measurements:
Derivatives: Stock warrants	0	0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2 \| Money Market Funds
Recurring Fair Value Measurements:
Cash equivalents: Money market funds	0	0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2 \| Certificates of Deposit
Recurring Fair Value Measurements:
Available-for-sale securities: Secondary market certificates of deposit		5,294
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 2 \| Mutual Fund
Recurring Fair Value Measurements:
Trading Securities: Mutual funds in nonqualified SERP	0	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	20,190
Total liabilities at fair value	20,190
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3 \| Stock Warrant
Recurring Fair Value Measurements:
Derivatives: Stock warrants	1,500	1,500
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3 \| Money Market Funds
Recurring Fair Value Measurements:
Cash equivalents: Money market funds	0	0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3 \| Certificates of Deposit
Recurring Fair Value Measurements:
Available-for-sale securities: Secondary market certificates of deposit		0
Fair Value, Measurements, Recurring \| Fair Value, Inputs, Level 3 \| Mutual Fund
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 investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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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