Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Leases) (Details)

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Commitments and Contingencies (Leases) (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Future annual minimum lease commitments under operating leases  
2019 $ 15,997
2020 15,437
2021 14,705
2022 10,816
2023 9,910
Thereafter 39,449
Total $ 106,314