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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Leases [Abstract] |
Future Minimum Lease Payments | Future minimum lease payments under non-cancelable operating leases, including renewals that are reasonably assured at the inception of the lease, with initial variable lease terms in excess of one year as of December 31, 2018, are as follows:
Year Ending |  | Amount
(in thousands) |  |
2019 |  | $ | 55,050 |
2020 |  | 53,100 |
2021 |  | 51,323 |
2022 |  | 49,573 |
2023 |  | 48,000 |
2024 and after |  | 168,498 |
|  | $ | 425,544 |
Future Minimum Payments Receivable | The total minimum rental receipts under lease agreements at December 31, 2018 are as follows:
Year Ending |  | Amount
(in thousands) |  |
2019 |  | $ | 7,067 |
2020 |  | 6,109 |
2021 |  | 4,042 |
2022 |  | 2,914 |
2023 |  | 1,345 |
2024 and after |  | 4,400 |
|  | $ | 25,877 |

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- Definition Schedule of Future Minimum Payments Receivables for Operating Leases [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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