Note 4 - Acquisitions and Divestitures (Details Textual) € in Millions, $ in Millions | Oct. 11, 2019USD ($) | Jul. 12, 2019USD ($) | Oct. 22, 2018USD ($) | Oct. 22, 2018EUR (€) | Sep. 20, 2018USD ($) | Apr. 05, 2018USD ($) | Mar. 31, 2020 | Jun. 30, 2018USD ($) | Oct. 22, 2018EUR (€) |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) | | | | | | | 10 years 73 days | | |
Reddick Divestiture [Member] | | | | | | | | | |
Proceeds from Sale of Productive Assets, Total | | | | | | $ 7.4 | | | |
Long-term Purchase Commitment, Period (Year) | | | | | | 2 years | | | |
Gain (Loss) on Disposition of Assets for Financial Service Operations, Total | | | | | | | | $ 5.9 | |
CardioCel and VascuCel Biologic Patches [Member] | | | | | | | | | |
Payments to Acquire Businesses, Gross | $ 14.2 | | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) | 10 years 146 days | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Achieving Audited Financial Statements of Acquired Business [Member] | | | | | | | | | |
Payments to Acquire Businesses, Gross | $ 0.3 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | First Holdback [Member] | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Total | 0.7 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Second Holdback [Member] | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Total | 0.7 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Third Holdback [Member] | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Total | 2 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Revenues Exceeding Twenty Million in the First Twelve Month Period After Closing Date [Member] | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Total | 2.5 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Revenues Exceeding Fifteen Million in the First Twelve Month Period After Closing Date [Member] | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Total | 1.2 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Revenues Exceeding Thirty Million in the Second Twelve Month Period After Closing Date [Member] | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Total | 2.5 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Revenues Exceeding Twenty-Two and a Half Million in the First Twelve Month Period After Closing Date [Member] | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Total | 1.2 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Extension of Product Shelf Life from 36 Months to 60 Months in the First Anniversary of Closing Date [Member] | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Total | 0.5 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Technology Licenses [Member] | | | | | | | | | |
Business Combination, Consideration Transferred, Total | 8 | | | | | | | | |
CardioCel and VascuCel Biologic Patches [Member] | Maximum [Member] | Biological Patch Business Assets [Member] | | | | | | | | | |
Business Combination, Consideration Transferred, Total | $ 15.3 | | | | | | | | |
Tru-Incise Valve Cutter [Member] | | | | | | | | | |
Business Combination, Consideration Transferred, Total | | $ 8 | | | | | | | |
Payments to Acquire Businesses, Gross | | $ 6.8 | | | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) | | 11 years 292 days | | | | | | | |
Business Combination, Deferred Purchase Consideration, Installment Payment | | $ 0.4 | | | | | | | |
Business Combination, Deferred Purchase Consideration | | 1.2 | | | | | | | |
Acquisition Date Fair Value | | $ 1.1 | | | | | | | |
Business Combination ,Fair Value Inputs, Discount Rate | | 4.19% | | | | | | | |
Business Acquisition, Purchase Price Allocation, Goodwill Expected Tax Deductible, Period (Year) | | 15 years | | | | | | | |
Cardial [Member] | | | | | | | | | |
Business Combination, Consideration Transferred, Total | | | $ 2.3 | € 2 | | | | | |
Payments to Acquire Businesses, Gross | | | $ 1.3 | € 1.1 | | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) | | | 9 years 146 days | 9 years 146 days | | | | | |
Business Combination, Deferred Purchase Consideration | | | $ 0.4 | | | | | | € 0.4 |
Business Combination, Consideration Transferred, Liabilities Incurred | | | 0.5 | € 0.5 | | | | | |
Deferred Tax Assets, Business Combinations | | | 0.6 | | | | | | € 0.5 |
Business Combination, Bargain Purchase, Gain Recognized, Amount | | | $ 1.6 | € 1.4 | | | | | |
Applied Medical [Member] | | | | | | | | | |
Business Combination, Consideration Transferred, Total | | | | | $ 14.2 | | | | |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life (Year) | | | | | 13 years | | | | |
Acquisition Date Fair Value | | | | | $ 3 | | | | |
Business Combination ,Fair Value Inputs, Discount Rate | | | | | 3.75% | | | | |
Business Acquisition, Purchase Price Allocation, Goodwill Expected Tax Deductible, Period (Year) | | | | | 15 years | | | | |
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Current Assets Deferred Costs | | | | | $ 3.2 | | | | |
Applied Medical [Member] | Closing Date [Member] | | | | | | | | | |
Business Combination, Consideration Transferred, Total | | | | | 11 | | | | |
Applied Medical [Member] | 12 Months Following the Closing Date [Member] | | | | | | | | | |
Business Combination, Consideration Transferred, Total | | | | | 2 | | | | |
Applied Medical [Member] | 24 Months Following the Closing Date [Member] | | | | | | | | | |
Business Combination, Consideration Transferred, Total | | | | | $ 1.2 | | | | |
Balloon Supply Agreement [Member] | Reddick Divestiture [Member] | | | | | | | | | |
Long-term Purchase Commitment, Period (Year) | | | | | | 6 years | | | |