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Stock Repurchase Program (Details) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 17, 2020 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) repurchase_program shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares | Aug. 02, 2016 USD ($) | Nov. 04, 2014 USD ($)
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Number of share repurchase programs | repurchase_program |  | 2 |  |  |  |
Aggregate purchase price for repurchased shares |  | $ 0 | $ 53,035,000 | $ 0 |  |
2016 and 2014 Share Repurchase Programs |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Remaining value of shares authorized for repurchase under stock repurchase programs |  | $ 54,900,000 |  |  |  |
Number of shares repurchased (in shares) | shares |  | 0 | 0 | 0 |  |
2016 Repurchase Program |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Value of shares authorized for repurchase under stock repurchase programs (up to) |  |  |  |  | $ 50,000,000 |
2014 Share Repurchase Program |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Value of shares authorized for repurchase under stock repurchase programs (up to) |  |  |  |  |  | $ 50,000,000
One-Time Stock Repurchase Transaction |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Value of shares authorized for repurchase under stock repurchase programs (up to) | $ 75,000,000 |  |  |  |  |
Number of shares repurchased (in shares) | shares | 749,300 |  |  |  |  |
Average price of repurchased shares (in dollars per share) | $ / shares | $ 70.78 |  |  |  |  |
Aggregate purchase price for repurchased shares | $ 53,000,000 |  |  |  |  |

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