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v3.22.2.2

Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2022
Accounting Policies [Abstract] |
Schedule of realized gains (losses) on derivatives not designated as hedging instruments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fiscal Year Ended September 30,
​ |  | 2022 |  | 2021 |  | 2020
Realized gains (losses) on derivatives not designated as hedging instruments | ​ | $ | 991 | ​ | $ | (7,781) | ​ | $ | (2,671)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fiscal Year Ended September 30,
​ |  | 2022 |  | 2021 |  | 2020
Realized gains (losses) on derivatives not designated as hedging instruments | ​ | $ | 991 | ​ | $ | (7,781) | ​ | $ | (2,671)
​
Schedule of property, plant and equipment | ​
​ | ​ | ​
Buildings |  | 10 - 40 years
Computer equipment and software |  | 3 - 7 years
Machinery and equipment |  | 2 - 10 years
Furniture and fixtures |  | 3 - 10 years
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30,
​ |  | 2022 |  | 2021
Buildings, land, and land use right | ​ | $ | 29,581 | ​ | $ | 4,987
Computer equipment and software | ​ |  | 35,814 | ​ |  | 27,350
Machinery and equipment | ​ |  | 90,700 | ​ |  | 77,217
Furniture and fixtures | ​ |  | 5,806 | ​ |  | 2,516
Leasehold improvements | ​ |  | 37,495 | ​ |  | 27,165
Capital projects in progress | ​ |  | 36,644 | ​ |  | 52,435
Right-of-use Asset | ​ | ​ | 2,476 | ​ | ​ | 2,252
​ | ​ |  | 238,516 | ​ |  | 193,922
Less: accumulated depreciation and amortization | ​ |  | (84,046) | ​ |  | (63,203)
Property, plant and equipment, net | ​ | $ | 154,470 | ​ | $ | 130,719
​
Schedule of intangible assets | ​
​ | ​ | ​
Trademarks |  | 3 - 13 years
Patents |  | 7 years
Completed technology |  | 7 - 20 years
Customer relationships |  | 6 - 14 years
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2022 | ​ | September 30, 2021
​ | ​ | ​ | ​ | Accumulated | ​ | Net Book | ​ | ​ | ​ | Accumulated | ​ | Net Book
​ |  | Cost |  | Amortization |  | Value |  | Cost |  | Amortization |  | Value
Patents | ​ | $ | 1,225 | ​ | $ | 1,106 | ​ | $ | 119 | ​ | $ | 1,242 | ​ | $ | 1,002 | ​ | $ | 240
Completed technology | ​ |  | 99,525 | ​ |  | 37,991 | ​ |  | 61,534 | ​ |  | 75,527 | ​ |  | 32,383 | ​ |  | 43,144
Trademarks and trade names | ​ |  | 400 | ​ |  | 41 | ​ |  | 359 | ​ |  | 424 | ​ |  | 33 | ​ |  | 391
Non-competition agreements | ​ | ​ | 681 | ​ | ​ | 439 | ​ | ​ | 242 | ​ | ​ | 681 | ​ | ​ | 249 | ​ | ​ | 432
Customer relationships | ​ |  | 246,949 | ​ |  | 130,802 | ​ |  | 116,147 | ​ |  | 253,486 | ​ |  | 111,159 | ​ |  | 142,327
Other intangibles | ​ | ​ | 202 | ​ | ​ | 202 | ​ | ​ | — | ​ | ​ | 246 | ​ | ​ | 246 | ​ | ​ | —
​ | ​ | $ | 348,982 | ​ | $ | 170,581 | ​ | $ | 178,401 | ​ | $ | 331,606 | ​ | $ | 145,072 | ​ | $ | 186,534
​
Schedule of stock-based compensation expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended September 30,
​ |  | 2022 |  | 2021 |  | 2020
Restricted stock units | ​ | $ | 10,597 | ​ | $ | 18,923 | ​ | $ | 9,907
Employee stock purchase plan | ​ |  | 1,846 | ​ |  | 1,128 | ​ |  | 744
Total stock-based compensation expense | ​ | $ | 12,443 | ​ | $ | 20,051 | ​ | $ | 10,651
​
Summary of valuation assumptions for an employee stock purchase plan | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended September 30, |
​ |  | 2022 |  | 2021 |  | 2020 |
Risk-free interest rate |  | 1.7 | % | 0.3 | % | 0.9 | %
Volatility |  | 49 | % | 53 | % | 58 | %
Expected life |  | 6 months |  | 6 months |  | 6 months |
Dividend yield |  | — | % | 0.6 | % | 1.1 | %
​

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