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Lease Commitments (Tables) | 12 Months Ended
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Dec. 31, 2017
Leases [Abstract] |
Future Minimum Rental Commitments | The approximate future minimum rental commitments, exclusive of taxes and other related charges, for all significant non-cancellable operating leases at December 31, 2017, are summarized as follows (in thousands):
Year ending December 31, |
2018 | $ | 8,032 |
2019 | 7,511 |
2020 | 6,980 |
2021 | 4,854 |
2022 | 3,378 |
Thereafter | 14,578 |
| $ | 45,333 |

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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://www.xbrl.org/2003/role/presentationRef -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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