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Consolidated Statements Of Changes In Shareholders' Equity (USD $) In Thousands, unless otherwise specified | Total | Preference Shares | Common Shares | Additional Paid-In Capital | Accumulated Other Comprehensive Income | Retained Earnings | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Beginning of period at Dec. 31, 2012 |  | $ 400,000 | $ 45,542 | $ 0 | $ 13,622 | $ 3,043,901 |
Statement of Changes in Stockholders' Equity |  |  |  |  |  |  |
Repurchase of shares |  |  | (1,369) | (429) |  | (109,501) |
Exercise of options and issuance of restricted stock awards |  |  | 337 | 162 |  |  |
Change in noncontrolling interests |  |  |  | 267 |  |  |
Change in net unrealized gains on investments | (7,572) |  |  |  | (7,572) |  |
Net income | 235,356 |  |  |  |  | 235,356 |
Net income attributable to noncontrolling interests | (38,607) |  |  |  |  | (38,607) |
Dividends on common shares |  |  |  |  |  | (12,329) |
Dividends on preference shares | (6,275) |  |  |  |  | (6,275) |
Noncontrolling interest |  |  |  |  |  |  | 3,747
Total shareholders’ equity | 3,566,852 |  |  |  |  |  |
End of period at Mar. 31, 2013 |  | 400,000 | 44,510 | 0 | 6,050 | 3,112,545 |
Beginning of period at Dec. 31, 2013 | 3,904,384 | 400,000 | 43,646 | 0 | 4,131 | 3,456,607 |
Statement of Changes in Stockholders' Equity |  |  |  |  |  |  |
Repurchase of shares |  |  | (2,978) | 4,179 |  | (278,252) |
Exercise of options and issuance of restricted stock awards |  |  | 188 | (4,144) |  |  |
Change in noncontrolling interests |  |  |  | (35) |  |  |
Change in net unrealized gains on investments | (168) |  |  |  | (168) |  |
Net income | 199,366 |  |  |  |  | 199,366 |
Net income attributable to noncontrolling interests | (42,768) |  |  |  |  | (42,768) |
Dividends on common shares |  |  |  |  |  | (11,899) |
Dividends on preference shares | (5,595) |  |  |  |  | (5,595) |
Noncontrolling interest |  |  |  |  |  |  | 0
Total shareholders’ equity | 3,762,278 |  |  |  |  |  |
End of period at Mar. 31, 2014 | $ 3,762,278 | $ 400,000 | $ 40,856 | $ 0 | $ 3,963 | $ 3,317,459 |

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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 27 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 7 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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