Annual report pursuant to Section 13 and 15(d)

Note 5 - Fair Value Measurements (Details Textual)

Note 5 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	1 Months Ended			12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	May 31, 2021	Apr. 06, 2021	Dec. 31, 2020	Jun. 04, 2019	Oct. 31, 2018	Jul. 02, 2018
Interest Expense, Total				$ 13,952	$ 19,197	$ 21,705
Nonoperating Income (Expense), Total				(89,121)	119,058	(34,704)
Income Tax Expense (Benefit), Total				8,590	47,181	$ 15,943
Business Combination, Contingent Consideration, Liability, Total				29,400
Acquisition of Asuragen, Inc. [Member]
Business Combination, Contingent Consideration, Liability, Total				18,300
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				105,000				$ 105,000
QT Holdings Corporation [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				51,000								$ 51,000
B-MoGen [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				38,000						$ 38,000
Reclassification out of Accumulated Other Comprehensive Income [Member] \| AOCI Attributable to Parent [Member]
Interest Expense, Total				8,598
Nonoperating Income (Expense), Total				512
Designated as Hedging Instrument [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member] \| AOCI Attributable to Parent [Member]
Interest Expense, Total				8,600	3,500
Nonoperating Income (Expense), Total				(500)
Income Tax Expense (Benefit), Total				(2,100)
Forward Starting Swap [Member] \| Other Current Liabilities [Member] \| Not Designated as Hedging Instrument [Member]
Derivative Liability, Current				800
Forward Starting Swap [Member] \| Cash Flow Hedging [Member]
Derivative, Notional Amount											$ 380,000
Derivative Notional Amount, Decrease in Period			$ 100,000
Forward Starting Swap [Member] \| Cash Flow Hedging [Member] \| Other Noncurrent Liabilities [Member]
Derivative Notional Amount, Dedesignated					80,000				$ 80,000
Hedging Liabilities, Noncurrent				7,600
Forward Starting Swap [Member] \| Cash Flow Hedging [Member] \| Forecast [Member]
Derivative Notional Amount, Decrease in Period	$ 200,000	$ 80,000
New Forward Starting Swap [Member] \| Cash Flow Hedging [Member]
Derivative, Notional Amount							$ 200,000
New Forward Starting Swap [Member] \| Cash Flow Hedging [Member] \| Other Noncurrent Assets [Member]
Hedging Assets, Noncurrent, Total				300
CCXI [Member]
Investments, Total				6,600	6,600
Investments, Fair Value Disclosure, Total				$ 1,400	$ 8,000