Note 4 - Acquisitions (Details Textual)

Note 4 - Acquisitions (Details Textual) - USD ($) $ in Thousands								12 Months Ended
	Jun. 04, 2019	Feb. 01, 2019	Aug. 01, 2018	Jul. 02, 2018	Feb. 01, 2018	Jan. 02, 2018	Sep. 05, 2017	Jun. 30, 2020	Jun. 30, 2019	Feb. 01, 2019	Jun. 30, 2018
Payments to Acquire Businesses, Net of Cash Acquired, Total								$ (0)	$ 289,492		$ 67,851
Gain (Loss) on Escrow Settlement								7,170	$ (0)		$ (0)
QT Holdings Corporation [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total				$ 20,500				20,462
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				51,000				51,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount				$ 0
QT Holdings Corporation [Member] \| Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)				14 years
Exosome Diagnostics, Inc [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total			$ 251,600					251,623
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			325,000					325,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount			0
Gain (Loss) on Escrow Settlement			$ 7,200
Exosome Diagnostics, Inc [Member] \| Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			15 years
Exosome Diagnostics, Inc [Member] \| Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			15 years
Exosome Diagnostics, Inc [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			14 years
B-MoGen [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total	$ 17,500							17,448
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	38,000							38,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Before Remeasurement to Fair Value	1,400
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	$ 3,700
Goodwill, Purchase Accounting Adjustments								300
B-MoGen [Member] \| Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	14 years
Trevigen Inc. [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total							$ 10,600	10,644
Business Acquisition, Goodwill, Expected Tax Deductible Amount							$ 0
Atlanta Biologicals [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total						$ 51,300		51,274
Business Acquisition, Goodwill, Expected Tax Deductible Amount						$ 0
Atlanta Biologicals [Member] \| Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)						13 years
Atlanta Biologicals [Member] \| Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)						15 years
Atlanta Biologicals [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)						12 years
Eurocell Diagnostics, SAS [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total		$ 1,300			$ 6,000			$ 5,933		$ 7,300
Business Acquisition, Goodwill, Expected Tax Deductible Amount					$ 0
Eurocell Diagnostics, SAS [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)					7 years

Annual report pursuant to Section 13 and 15(d)

Note 4 - Acquisitions (Details Textual)