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Stockholders' Equity - Narrative (Details) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Oct. 02, 2019 USD ($) shares | Dec. 31, 2020 USD ($) vote shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares | Nov. 02, 2018 shares
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Share consideration given for acquisitions | $ |  | $ 0 | $ 16,195 | $ 0 |
Common Stock |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Common stock, votes entitled per share | vote |  | 1 |  |  |
Number of shares authorized to be repurchased (in shares) |  |  |  |  | 2,000,000
Purchase of treasury stock (in shares) |  | 0 | 250,000 | 467,000 |
Plateau |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Shares issued in acquisition of business (in shares) | 1,245,000 |  |  |  |
Share consideration given for acquisitions | $ | $ 16,195 |  |  |  |

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