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Recent Accounting Pronouncements - Narrative (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jan. 01, 2020 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |
Retained earnings |  | $ 444,728,000 |  | $ 444,728,000 |  | $ 405,668,000
Income tax benefit |  | $ (8,872,000) | $ (6,487,000) | $ (11,858,000) | $ (8,058,000) |
Accounting Standards Update [Extensible List] |  |  |  | us-gaap:AccountingStandardsUpdate201613Member |  |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |
Income tax benefit | $ 96,000 |  |  |  |  |
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |
Retained earnings | $ (291,000) |  |  |  |  |

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