Note 2 - Acquisitions (Details Textual) | Mar. 14, 2016USD ($) | Jul. 08, 2015USD ($) | Nov. 03, 2014USD ($) | Jul. 31, 2014USD ($) | Jul. 02, 2014USD ($) | Apr. 30, 2014USD ($) | Jul. 22, 2013USD ($) | Jun. 30, 2016USD ($) | Jun. 30, 2015USD ($) | Jun. 30, 2014USD ($) | Jun. 30, 2013USD ($) |
Zephyrus [Member] | Developed Technology Rights [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 7,400,000 | | | | | | | | | | |
Zephyrus [Member] | Instruments Sales Contingency [Member] | | | | | | | | | | | |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | $ 3,500,000 | | | | | | | $ 3,500,000 | | | |
Business Combination, Contingent Consideration, Liability, Number of Instruments Sold | 10 | | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Anniversary of Closing Date | 3 years | | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Cumulative Sales | $ 3,000,000 | | | | | | | | | | |
Business Combination, Contingent Consideration, Liability, Number of Years Within Closing Date | 4 years 182 days | | | | | | | | | | |
Zephyrus [Member] | | | | | | | | | | | |
Payments to Acquire Businesses, Gross | $ 8,000,000 | | | | | | | | | | |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | 7,000,000 | | | | | | | | | | |
Business Combination, Contingent Consideration, Liability | $ 3,500,000 | | | | | | | | | | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | | | 8,030,000 | | | |
Cliniqa [Member] | Developed Technology Rights [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | $ 18,000,000 | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | 14 years | | | | | | | | | |
Cliniqa [Member] | Trade Names [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | $ 27,000,000 | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | 13 years | | | | | | | | | |
Cliniqa [Member] | Trademarks and Trade Names [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | $ 1,100,000 | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | 4 years | | | | | | | | | |
Cliniqa [Member] | | | | | | | | | | | |
Payments to Acquire Businesses, Net of Cash Acquired | | $ 83,000,000 | | | | | | 82,888,000 | | | |
CyVek, Inc. [Member] | Developed Technology Rights [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | $ 20,200,000 | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | 15 years | | | | | | | | |
CyVek, Inc. [Member] | Trade Names [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | $ 100,000 | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | 1 year 182 days | | | | | | | | |
CyVek, Inc. [Member] | Customer Relationships [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | $ 600,000 | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | 10 years | | | | | | | | |
CyVek, Inc. [Member] | Selling, General and Administrative Expenses [Member] | | | | | | | | | | | |
Business Combination, Acquisition Related Costs | | | | | | | | | $ 100,000 | | |
CyVek, Inc. [Member] | | | | | | | | | | | |
Payments to Acquire Businesses, Gross | | | $ 62,000,000 | | | | | | 62,000,000 | | |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | | | | | | | | | 35,000,000 | | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | | | 59,927,000 | | | |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | | | $ 10,000,000 | | | | | | | | |
Noncontrolling Interest, Ownership Percentage by Parent | | | 19.90% | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contingent Liability | | | $ 35,000,000 | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Contingent Liability, Percentage | | | 50.00% | | | | | | | | |
Business Combination, Milestone Payment Threshold | | | $ 100,000,000 | | | | | | | | |
Business Combination, Liabilities Arising from Contingencies, Amount Recognized | | | | | | | | | 35,000,000 | | |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain | | | $ 8,300,000 | | | | | | | | |
ProteinSimple [Member] | Developed Technology Rights [Member] | Minimum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | 9 years | | | | | | | |
ProteinSimple [Member] | Developed Technology Rights [Member] | Maximum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | 10 years | | | | | | | |
ProteinSimple [Member] | Developed Technology Rights [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | $ 39,200,000 | | | | | | | |
ProteinSimple [Member] | Trade Names [Member] | Minimum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | 18 years | | | | | | | |
ProteinSimple [Member] | Trade Names [Member] | Maximum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | 20 years | | | | | | | |
ProteinSimple [Member] | Trade Names [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | $ 36,100,000 | | | | | | | |
ProteinSimple [Member] | Customer Relationships [Member] | Minimum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | 14 years | | | | | | | |
ProteinSimple [Member] | Customer Relationships [Member] | Maximum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | 16 years | | | | | | | |
ProteinSimple [Member] | Customer Relationships [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | $ 101,600,000 | | | | | | | |
ProteinSimple [Member] | Noncompete Agreements [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | $ 200,000 | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | 3 years | | | | | | | |
ProteinSimple [Member] | Selling, General and Administrative Expenses [Member] | | | | | | | | | | | |
Business Combination, Acquisition Related Costs | | | | | | | | 800,000 | | | |
ProteinSimple [Member] | | | | | | | | | | | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | | | 300,053,000 | | | |
Novus Holdings, LLC [Member] | Developed Technology Rights [Member] | Minimum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | 4 years | | | | | | |
Novus Holdings, LLC [Member] | Developed Technology Rights [Member] | Maximum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | 12 years | | | | | | |
Novus Holdings, LLC [Member] | Developed Technology Rights [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | $ 5,000,000 | | | | | | |
Novus Holdings, LLC [Member] | Trade Names [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | $ 5,300,000 | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | 20 years | | | | | | |
Novus Holdings, LLC [Member] | Customer Relationships [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | $ 14,400,000 | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | 15 years | | | | | | |
Novus Holdings, LLC [Member] | | | | | | | | | | | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | | | 60,122,000 | | | |
Business Combination, Acquisition Related Costs | | | | | $ 100,000 | | | | | | |
PrimeGene [Member] | Developed Technology Rights [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | $ 2,200,000 | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | 9 years | | | | | |
PrimeGene [Member] | Trade Names [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | $ 3,000,000 | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | 11 years | | | | | |
PrimeGene [Member] | Customer Relationships [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | $ 9,100,000 | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | 9 years | | | | | |
PrimeGene [Member] | Noncompete Agreements [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | $ 300,000 | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | 3 years | | | | | |
PrimeGene [Member] | | | | | | | | | | | |
Payments to Acquire Businesses, Gross | | | | | | | | | | $ 6,000,000 | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | $ 6,000,000 | | 6,031,000 | | | |
Business Combination, Acquisition Related Costs | | | | | | $ 400,000 | | | | | |
Bionostics [Member] | Developed Technology Rights [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | | $ 14,400,000 | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | 9 years | | | | |
Bionostics [Member] | Trade Names [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | | $ 2,700,000 | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | 5 years | | | | |
Bionostics [Member] | Customer Relationships [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | | $ 41,000,000 | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | 14 years | | | | |
Bionostics [Member] | Noncompete Agreements [Member] | | | | | | | | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | | | | | | | $ 2,400,000 | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | 3 years | | | | |
Bionostics [Member] | Selling, General and Administrative Expenses [Member] | | | | | | | | | | | |
Business Combination, Acquisition Related Costs | | | | | | | | | | 500,000 | $ 600,000 |
Bionostics [Member] | | | | | | | | | | | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | | | $ 103,149,000 | | | |
Developed Technology Rights [Member] | Minimum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | | 8 years | | | |
Developed Technology Rights [Member] | Maximum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | | 15 years | | | |
Trade Names [Member] | Minimum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | | 5 years | | | |
Trade Names [Member] | Maximum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | | 16 years | | | |
Customer Relationships [Member] | Minimum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | | 8 years | | | |
Customer Relationships [Member] | Maximum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | | 16 years | | | |
Noncompete Agreements [Member] | Minimum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | | 3 years | | | |
Noncompete Agreements [Member] | Maximum [Member] | | | | | | | | | | | |
Finite-Lived Intangible Asset, Useful Life | | | | | | | | 5 years | | | |
Payments to Acquire Businesses, Net of Cash Acquired | | | | | | | | $ 91,423,000 | 420,102,000 | 109,180,000 | |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain | | | | | | | | $ 0 | $ 8,300,000 | $ 0 | |