Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Minimum Annual Rentals for Non-Cancelable Operating Leases (Details)

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Commitments and Contingencies - Minimum Annual Rentals for Non-Cancelable Operating Leases (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Commitments And Contingencies Disclosure [Abstract]  
2019 $ 16,651
2020 16,105
2021 15,315
2022 14,391
2023 13,462
Thereafter 52,626
Total minimum annual rentals $ 128,550