Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Narrative (Details)

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended			9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020	Mar. 31, 2022	Sep. 30, 2021	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2021	May 31, 2021	Apr. 06, 2021	Dec. 31, 2020	Jun. 30, 2020	Oct. 31, 2018
Interest Expense, Total				$ 2,493		$ 2,660	$ 8,804	$ 10,661
Income Tax Expense (Benefit), Total				8,628		(48)	21,150	16,121
Nonoperating Income (Expense), Total				(21,675)		$ (23,272)	6,317	(27,652)
Payment for Contingent Consideration Liability, Financing Activities							700	0
Exchange Traded Investment Grade Bond Funds [Member]
Investments, Fair Value Disclosure, Total				19,400			19,400
Acquisition of Asuragen, Inc. [Member]
Business Combination, Contingent Consideration, Liability, Total				4,800			4,800				$ 18,300
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				105,000			105,000				$ 105,000
QT Holdings Corporation [Member]
Payment for Contingent Consideration Liability, Financing Activities					$ 4,000
AOCI Attributable to Parent [Member]
Interest Expense, Total							5,214
Income Tax Expense (Benefit), Total							(1,226)
Reclassification out of Accumulated Other Comprehensive Income [Member] \| AOCI Attributable to Parent [Member]
Interest Expense, Total								6,662
Nonoperating Income (Expense), Total								512
Reclassification out of Accumulated Other Comprehensive Income [Member] \| Designated as Hedging Instrument [Member] \| AOCI Attributable to Parent [Member]
Interest Expense, Total							5,200	6,700
Income Tax Expense (Benefit), Total							1,200	1,700
Nonoperating Income (Expense), Total								$ 500
Forward Starting Swap [Member] \| Cash Flow Hedging [Member]
Derivative, Notional Amount														$ 380,000
Derivative Notional Amount, Decrease in Period		$ 80,000	$ 100,000
Forward Starting Swap [Member] \| Cash Flow Hedging [Member] \| Other Current Liabilities [Member]
Derivative Liability, Current				2,000			2,000
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
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				9,300			9,300		300
CCXI [Member]
Investments, Total				6,600			6,600		6,600
Investments, Fair Value Disclosure, Total				$ 36,500			36,500		20,000
Warrant Via Net Share Settlement				66,833
Value of warrants									$ 1,400
CCXI [Member] \| Exchange Traded Investment Grade Bond Funds [Member]
Investments, Total				$ 20,000			$ 20,000