Overview of the Business and Basis of Presentation - Financial assets and liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Liabilities Fair Value Disclosure	$ 3,090
Common stock [Member]
Assets, Fair Value Disclosure	4,521	$ 5,537
Preferred Stock [Member]
Assets, Fair Value Disclosure	2,883
Common stock warrants [Member]
Assets, Fair Value Disclosure	1	283
Available-for-sale Securities [Member]
Assets, Fair Value Disclosure	20,393	13,381
Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure	8,083	32,992
Mutual Fund [Member]
Assets, Fair Value Disclosure	0	809
Cash [Member]
Assets, Fair Value Disclosure	5,223	3,777
Money Market Funds [Member]
Assets, Fair Value Disclosure	2,860	28,215
Commercial Paper [Member]
Assets, Fair Value Disclosure		1,000
Commercial Paper [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure		3,294
Repurchase Agreements [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure	20,393	10,087
Equity Method Investments [Member]
Assets, Fair Value Disclosure	7,405	6,629
Fair Value, Inputs, Level 1 [Member]
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Common stock [Member]
Assets, Fair Value Disclosure	4,521	5,537
Fair Value, Inputs, Level 1 [Member] | Preferred Stock [Member]
Assets, Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Common stock warrants [Member]
Assets, Fair Value Disclosure	1	283
Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure	8,083	31,992
Fair Value, Inputs, Level 1 [Member] | Mutual Fund [Member]
Assets, Fair Value Disclosure	0	809
Fair Value, Inputs, Level 1 [Member] | Cash [Member]
Assets, Fair Value Disclosure	5,223	3,777
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
Assets, Fair Value Disclosure	2,860	28,215
Fair Value, Inputs, Level 1 [Member] | Commercial Paper [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure		0
Fair Value, Inputs, Level 1 [Member] | Commercial Paper [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure		0
Fair Value, Inputs, Level 1 [Member] | Repurchase Agreements [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] | Equity Method Investments [Member]
Assets, Fair Value Disclosure	4,522	6,629
Fair Value, Inputs, Level 2 [Member]
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Common stock [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Preferred Stock [Member]
Assets, Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Common stock warrants [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure	20,393	13,381
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure	0	1,000
Fair Value, Inputs, Level 2 [Member] | Mutual Fund [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Cash [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Commercial Paper [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure		3,294
Fair Value, Inputs, Level 2 [Member] | Commercial Paper [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure		1,000
Fair Value, Inputs, Level 2 [Member] | Repurchase Agreements [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure	20,393	10,087
Fair Value, Inputs, Level 2 [Member] | Equity Method Investments [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member]
Liabilities Fair Value Disclosure	3,090
Fair Value, Inputs, Level 3 [Member] | Common stock [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Preferred Stock [Member]
Assets, Fair Value Disclosure	2,883
Fair Value, Inputs, Level 3 [Member] | Common stock warrants [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure	0
Fair Value, Inputs, Level 3 [Member] | Mutual Fund [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Cash [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Commercial Paper [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure		0
Fair Value, Inputs, Level 3 [Member] | Commercial Paper [Member] | Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure		0
Fair Value, Inputs, Level 3 [Member] | Repurchase Agreements [Member] | Available-for-sale Securities [Member]
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Method Investments [Member]
Assets, Fair Value Disclosure	2,883	$ 0
Contingent Consideration
Liabilities Fair Value Disclosure	2,890
Contingent Consideration | Fair Value, Inputs, Level 1 [Member]
Liabilities Fair Value Disclosure	0
Contingent Consideration | Fair Value, Inputs, Level 2 [Member]
Liabilities Fair Value Disclosure	0
Contingent Consideration | Fair Value, Inputs, Level 3 [Member]
Liabilities Fair Value Disclosure	2,890
Contingent warrants
Liabilities Fair Value Disclosure	200
Contingent warrants | Fair Value, Inputs, Level 1 [Member]
Liabilities Fair Value Disclosure	0
Contingent warrants | Fair Value, Inputs, Level 2 [Member]
Liabilities Fair Value Disclosure	0
Contingent warrants | Fair Value, Inputs, Level 3 [Member]
Liabilities Fair Value Disclosure	$ 200