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Executive Bonus Plan - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 03, 2020 USD ($) acquisition
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |  |
Number of trading days prior to end of applicable quarter, shares determined upon election by volume-weighted average price | acquisition |  |  |  |  | 10,000
Number of trading days after the end of applicable quarter, shares determined upon election by volume-weighted average price | acquisition |  |  |  |  | 10
Non-deferred incentive bonus threshold for pro rata adjustment | $ |  |  |  |  | $ 7,500
Deferred Bonus |  |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] |  |  |  |  |
Company's Management Reported Operating Income (MORI) threshold for bonus plan (up to) | 20.00% |  | 20.00% |  |
Bonus plan compensation expense | $ | $ 9,905 | $ 8,397 | $ 26,469 | $ 22,036 |

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