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Reinsurance (Tables) | 12 Months Ended
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Dec. 31, 2015
Insurance [Abstract] |
Summary of the effect of reinsurance on premiums written and earned | The effect of reinsurance on premiums written and earned was as follows:
(In thousands) |  | 2015 Premiums |  | 2014 Premiums |  | 2013 Premiums
|  | Written |  | Earned |  | Written |  | Earned |  | Written |  | Earned
Direct |  | $ | 780,982 |  |  | $ | 772,968 |  |  | $ | 761,043 |  |  | $ | 755,623 |  |  | $ | 566,745 |  |  | $ | 568,629 |
Assumed |  | 31,236 |  |  | 22,691 |  |  | 18,566 |  |  | 12,987 |  |  | 802 |  |  | 804 |
Ceded |  | (102,933 | ) |  | (101,510 | ) |  | (77,760 | ) |  | (68,879 | ) |  | (42,365 | ) |  | (41,514 | )
Net premiums |  | $ | 709,285 |  |  | $ | 694,149 |  |  | $ | 701,849 |  |  | $ | 699,731 |  |  | $ | 525,182 |  |  | $ | 527,919 |

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- Definition Tabular disclosure of the effects of reinsurance, for example, but not limited to, disclosure of direct, assumed, and ceded insurance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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- References No definition available. + Details
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