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Leases (Maturities of Operating Lease Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Leases [Abstract] |  |  |
2020 | $ 18,016 |  |
2021 | 17,424 |  |
2022 | 13,968 |  |
2023 | 9,358 |  |
2024 | 6,657 |  |
Thereafter | 33,602 |  |
Total lease payments | 99,025 |  |
Less imputed interest | (16,272) |  |
Total | 82,753 |  |
Current operating lease liabilities, included in accrued liabilities | 15,281 |  |
Long-term operating lease liabilities | $ 67,472 | $ 68,939 | $ 0
Weighted average remaining lease term - operating leases | 10 years 3 months 18 days |  |
Weighted average discount rate - operating leases | 3.50% |  |

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