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Leases (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018
Leases [Abstract] |  |  |
Weighted average remaining lease term for operating leases | 4 years 1 month 6 days | 4 years 1 month 6 days |
Weighted average discount rate for operating leases | 4.80% | 4.80% |
Components of Lease Expense [Abstract] |  |  |
Operating lease cost | $ 12,417 | $ 25,278 |
Short-term lease cost | 52 | 104 |
Variable lease cost | 1,105 | 2,157 |
Total lease expense | 13,574 | 27,539 |
Operating right-of-use assets | 118,507 | 118,507 | $ 0
Current operating lease liabilities | 37,200 | 37,200 |
Long-term operating lease liabilities | 84,102 | 84,102 | 0
Supplemental Cash Flow Information Related to Leases [Abstract] |  |  |
Operating cash outflow from operating leases |  | 26,570 |
ROU assets obtained in exchange for lease obligations |  | 140,585 |
Maturities of Operating Lease Liabilities [Abstract] |  |  |
2019 | 23,632 | 23,632 |
2020 | 37,424 | 37,424 |
2021 | 30,478 | 30,478 |
2022 | 16,439 | 16,439 |
2023 | 11,574 | 11,574 |
Thereafter | 15,514 | 15,514 |
Total | 135,061 | 135,061 |
Less: Finance charges | 13,794 | 13,794 |
Total principal liability | 121,267 | 121,267 |
Additional lease liabilities not yet commenced | $ 200 | $ 200 |
Operating Leases, Minimum Future Obligations [Abstract] |  |  |
2019 |  |  | 39,358
2020 |  |  | 27,553
2021 |  |  | 20,266
2022 |  |  | 11,723
2023 |  |  | 9,950
Thereafter |  |  | 7,628
Total minimum lease payments |  |  | 116,478
Financing Obligations, Minimum Future Obligations [Abstract] |  |  |
2019 |  |  | 726
2020 |  |  | 748
2021 |  |  | 757
2022 |  |  | 770
2023 |  |  | 794
Thereafter |  |  | 1,148
Total minimum lease payments |  |  | $ 4,943
Minimum [Member] |  |  |
Leases [Abstract] |  |  |
Remaining lease terms |  | 1 year |
Maximum [Member] |  |  |
Leases [Abstract] |  |  |
Remaining lease terms |  | 15 years |
Extension period for leases |  | 10 years |
Termination period for leases |  | 1 year |

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