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Represents debt issuance price as percentage of principal amount.

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Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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The price per share of the conversion feature embedded in the debt instrument.

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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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Borrowings - Convertible Senior Notes Due 2029 and 2031 (Details)			1 Months Ended		3 Months Ended
	Nov. 20, 2025 USD ($) D $ / shares	Jul. 19, 2024 USD ($) D $ / shares	Nov. 30, 2025 USD ($)	Jul. 31, 2024 USD ($)	Sep. 30, 2026 USD ($) $ / shares	Sep. 30, 2025 USD ($)
Borrowings
Proceeds from long-term debt						$ 100,057,000
Amortization of debt discount and issuance costs					$ 1,032,000	450,000
Convertible Senior Notes Due 2029
Borrowings
Principal amount					$ 350,000,000
Interest rate (as a percentage)					2.25%
Conversion price (in dollars per share) \| $ / shares					$ 191.98
Total interest expense					$ 2,400,000	2,400,000
Interest expense debt excluding amortization					2,000,000	2,000,000
Amortization of debt discount and issuance costs					400,000	$ 400,000
Convertible Senior Notes Due 2029
Borrowings
Principal amount				$ 350,000,000
Interest rate (as a percentage)		2.25%		2.25%
Percentage of principal amount (as a percentage)				97.50%
Proceeds from long-term debt		$ 340,400,000
Conversion rate		5.209
Conversion price (in dollars per share) \| $ / shares		$ 191.98
Debt instrument per principal amount		$ 1,000
Threshold percentage of stock price (as a percentage)		130.00%
Number of consecutive trading days \| D		20
Debt instrument price percentage		100.00%
Percentage of principal amount redeemed		100.00%
Convertible Senior Notes Due 2029 \| Calendar quarter commencing after the quarter ended on September 30, 2025
Borrowings
Threshold percentage of stock price (as a percentage)		130.00%
Number of consecutive trading days \| D		30
Conversion price trading days \| D		20
Convertible Senior Notes Due 2029 \| Five consecutive business days after specified period
Borrowings
Threshold percentage of stock price (as a percentage)		98.00%
Number of consecutive trading days \| D		10
Convertible Senior Notes Due 2031
Borrowings
Principal amount			$ 575,000,000
Interest rate (as a percentage)	0.50%		0.50%
Percentage of principal amount (as a percentage)			98.00%
Proceeds from long-term debt	$ 563,000,000
Conversion rate	2.8263
Conversion price (in dollars per share) \| $ / shares	$ 353.82
Debt instrument per principal amount	$ 1,000
Threshold percentage of stock price (as a percentage)	130.00%
Number of consecutive trading days \| D	20
Debt instrument price percentage	100.00%
Percentage of principal amount redeemed	100.00%
Total interest expense					1,300,000
Interest expense debt excluding amortization					700,000
Amortization of debt discount and issuance costs					600,000
Convertible Senior Notes Due 2031 \| Calendar quarter commencing after the quarter ended on September 30, 2025
Borrowings
Threshold percentage of stock price (as a percentage)	130.00%
Number of consecutive trading days \| D	30
Conversion price trading days \| D	20
Convertible Senior Notes Due 2031 \| Five consecutive business days after specified period
Borrowings
Threshold percentage of stock price (as a percentage)	98.00%
Number of consecutive trading days \| D	10
Lines-of-credit
Borrowings
Amount outstanding under letters of credit					61,800,000
Available credit facility					$ 58,400,000