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Leases (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018
Quantitative Lease Disclosures [Abstract] |  |  |  |
Renewal option period |  | 5 years | 5 years |
Assets [Abstract] |  |  |  |
Operating lease right-of-use assets |  | $ 35,648 | $ 35,648 | $ 0
Liabilities [Abstract] |  |  |  |
Sundry payables and accrued expenses |  | 8,053 | 8,053 |
Noncurrent operating lease liabilities |  | 28,613 | 28,613 | $ 0
Present value of lease liabilities |  | $ 36,666 | $ 36,666 |
Operating Leases [Abstract] |  |  |  |
Weighted average remaining lease term |  | 6 years 1 month 6 days | 6 years 1 month 6 days |
Weighted average discount rate |  | 3.80% | 3.80% |
Lease Expense [Abstract] |  |  |  |
Operating lease expense | [1] | $ 2,210 | $ 4,434 |
Excluded expenses of non lease |  |  | 1,100 |
Cash Paid for the amounts included in the measurement of lease liabilities [Abstract] |  |  |  |
Operating cash flows from operating leases |  |  | 4,239 |
Right-of-use assets obtained in exchange for new lease obligations [Abstract] |  |  |  |
Operating leases |  |  | 744 |
Minimum Lease Payments [Abstract] |  |  |  |
2019 |  | 4,342 | 4,342 |
2020 |  | 7,689 | 7,689 |
2021 |  | 7,027 | 7,027 |
2022 |  | 5,818 | 5,818 |
2023 |  | 5,281 | 5,281 |
Thereafter |  | 11,316 | 11,316 |
Total lease payments |  | 41,473 | 41,473 |
Less: Interest |  | (4,807) | (4,807) |
Present value of lease liabilities |  | $ 36,666 | $ 36,666 |
Maximum [Member] |  |  |  |
Quantitative Lease Disclosures [Abstract] |  |  |  |
Remaining operating lease terms |  |  | 10 years |
[1] | Excludes expenses of approximately $1.1 million related to non-lease components such as maintenance, property taxes, etc., and operating lease expense for leases with an initial term of 12 months or less, which is not material.

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