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REINSURANCE (Tables) | 12 Months Ended
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Dec. 31, 2017
Reinsurance Disclosures [Abstract] |
BREAKDOWN OF GROSS AND NET PREMIUMS WRITTEN AND EARNED | Gross and net premiums written and earned were as follows:
| Year ended December 31, | 2017 |  | 2016 |  | 2015 |
|  | Premiums written |  | Premiums earned |  | Premiums written |  | Premiums earned |  | Premiums written |  | Premiums earned |
| Gross | $ | 5,556,273 |  |  | $ | 5,616,234 |  |  | $ | 4,970,208 |  |  | $ | 4,762,394 |  |  | $ | 4,603,730 |  |  | $ | 4,567,953 |  |
| Ceded | (1,529,130 | ) |  | (1,467,474 | ) |  | (1,217,234 | ) |  | (1,056,769 | ) |  | (929,064 | ) |  | (881,536 | ) |
| Net | $ | 4,027,143 |  |  | $ | 4,148,760 |  |  | $ | 3,752,974 |  |  | $ | 3,705,625 |  |  | $ | 3,674,666 |  |  | $ | 3,686,417 |  |

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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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