v3.25.2
Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)
 9 Months Ended 12 Months Ended
Jun. 26, 2023
Jun. 02, 2020
Jun. 30, 2025
Sep. 30, 2024
Debt Instrument [Line Items]        
Principal     $ 210,000,000 $ 297,500,000
Unamortized Discount     (2,017,000) (2,777,000)
Deferred Issuance Costs     (9,160,000) (12,817,000)
Total debt     198,823,000 281,906,000
Less: current portion of long-term debt     0 (87,094,000)
Total long-term debt     198,823,000 $ 194,812,000
3.00% Convertible Senior Notes Due 2025        
Debt Instrument [Line Items]        
Maturity Date   Jun. 01, 2025   Jun. 01, 2025
Convertible Debt Coupon Rate   3.00%   3.00%
Effective Interest Rate       3.70%
Principal   $ 175,000,000.0   $ 87,500,000
Unamortized Discount       0
Deferred Issuance Costs       (406,000)
Total debt       $ 87,094,000
Less: current portion of long-term debt     0  
Total long-term debt     $ 77,782,000  
1.50% Convertible Senior Notes Due 2025        
Debt Instrument [Line Items]        
Maturity Date     Jul. 01, 2028 Jul. 01, 2028
Convertible Debt Coupon Rate     1.50% 1.50%
Effective Interest Rate     5.49% 8.55%
Principal     $ 87,500,000 $ 87,500,000
Unamortized Discount     (2,017,000) (2,777,000)
Deferred Issuance Costs     (7,701,000) (10,602,000)
Total debt     $ 77,782,000 $ 74,121,000
1.50% Convertible Senior Notes Due 2028        
Debt Instrument [Line Items]        
Maturity Date Jul. 01, 2028   Jul. 01, 2028 Jul. 01, 2028
Convertible Debt Coupon Rate 1.50%   1.50% 1.50%
Effective Interest Rate     1.91% 1.91%
Principal $ 190,000,000.0   $ 122,500,000 $ 122,500,000
Unamortized Discount     0 0
Deferred Issuance Costs     (1,459,000) (1,809,000)
Total debt     121,041,000 $ 120,691,000
Less: current portion of long-term debt     0  
Total long-term debt     $ 121,041,000