Leases - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Lease commitments, 2019	$ 35,973
Lease commitments, 2020	29,917
Lease commitments, 2021	27,592
Lease commitments, 2022	25,185
Lease commitments, 2023	23,589
Lease commitments, Thereafter	104,126
Lease commitments, Total	246,382
Sublease Rentals, 2019	69
Sublease Rentals, 2020	0
Sublease Rentals, 2021	0
Sublease Rentals, 2022	0
Sublease Rentals, 2023	0
Sublease Rentals, Thereafter	0
Sublease Rentals, Total	69
Net, 2019	35,904
Net, 2020	29,917
Net, 2021	27,592
Net, 2022	25,185
Net, 2023	23,589
Net, Thereafter	104,126
Net, Total	$ 246,313

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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