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Stock Repurchase Program (Details) - USD ($) $ in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 27, 2021 | Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2021 | May 31, 2019
Class of Stock [Line Items] |  |  |  |  |  |
Shares repurchased during period (in shares) | 100,000 |  |  |  |  |
May 2019 Plan |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Number of shares authorized for repurchase (up to) (in shares) |  |  |  |  |  | 1,000,000
Shares repurchased during period (in shares) |  |  | 169,602 | 436,369 |  |
Stock repurchased during period, value |  |  | $ 1.2 |  |  |
Remaining number of shares authorized to be repurchased (in shares) |  |  |  |  | 395,029 |
March 2021 Plan |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Stock repurchased during period, value |  | $ 1.6 |  |  |  |
Shares repurchased and retired during period (in shares) |  | 100,000 |  |  |  |

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