v3.26.1
Convertible Senior Notes, Net (Tables)
6 Months Ended
Mar. 31, 2026
Convertible Senior Notes, Net  
Schedule of Net Carrying Value and Fair Value of the Convertible Senior Notes

The following table presents the net carrying value and fair value of the 2030 Convertible Senior Notes as of March 31, 2026:

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  ​ ​ ​

Unamortized

  ​ ​ ​

  ​ ​ ​

  ​ ​ ​

Principal

Debt Issuance

Net Carrying

Fair Value

In thousands

Amount

Costs

Amount

Amount

Leveling

2030 Convertible Senior Notes

$

400,000

$

(8,293)

$

391,707

$

404,392

 

Level 2

Schedule of Interest Expense

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Three Months Ended March 31,

  ​ ​ ​

Six Months Ended March 31,

In thousands

2026

  ​ ​ ​

2025

2026

  ​ ​ ​

2025

Coupon interest

$

2,250

$

2,250

$

4,500

$

2,725

Amortization of debt issuance costs

 

454

 

438

 

904

 

534

Total

$

2,704

$

2,688

$

5,404

$

3,259