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Leases (Tables) | 6 Months Ended
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Jun. 30, 2018
Leases [Abstract] |
Schedule of Operating Lease Rental Expense | Operating lease rental expense associated with all operating leases, which is calculated on a straight-line basis, is as follows:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(In thousands) |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Space agreements |  | $ | 10,003 |  |  | $ | 9,112 |  |  | $ | 19,422 |  |  | $ | 18,639 |
Related party leases |  |  | 383 |  |  |  | 505 |  |  |  | 791 |  |  |  | 1,081 |
Other operating leases |  |  | 3,817 |  |  |  | 3,343 |  |  |  | 7,410 |  |  |  | 6,528 |
Total rent expense |  | $ | 14,203 |  |  | $ | 12,960 |  |  | $ | 27,623 |  |  | $ | 26,248 |

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- Definition Tabular disclosure of rental expense from operating leases for each period for which an income statement is presented with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
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