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Notes Payable and Other Noncurrent Liabilities (Details) - USD ($) $ in Thousands | Oct. 31, 2019 | Jan. 22, 2019 | Sep. 30, 2021
--- | --- | --- | ---
Amended and restated credit agreement |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Amount of credit facilities |  | $ 325,000 |
Term of credit facility |  | 5 years |
Amended and restated credit agreement | Term loan facility |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Amount of credit facilities |  | $ 243,750 |
Note payable, gross |  |  | $ 83,680
Loan modification costs |  | 1,639 | $ 765
Amended and restated credit agreement | Revolving credit facility |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Amount of credit facilities |  | 81,250 |
Loan modification costs |  | $ 596 |
Amendment - October 31, 2019 | Term loan facility |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Amount of credit facilities | $ 150,625 |  |
Increase (decrease) in facility | (68,750) |  |
Amendment - October 31, 2019 | Revolving credit facility |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Amount of credit facilities | 150,000 |  |
Increase (decrease) in facility | $ 68,750 |  |

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