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Schedule II. Condensed Financial Information Of Registrant (Balance Sheets) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
Assets |  |  |  |
Fixed maturity investments trading, at fair value - amortized cost $104,521 at December 31, 2017 (2016 - $22,402) | $ 7,426,555 | $ 6,891,244 |  |
Short term investments, at fair value (Notes 5 and 6) | 991,863 | 1,368,379 |  |
Cash and cash equivalents | 1,361,592 | 421,157 | $ 506,885 | $ 525,584
Investments in subsidiaries | 0 | 0 |  |
Accrued investment income | 42,235 | 38,076 |  |
Receivable for investments sold | 103,145 | 105,841 |  |
Other assets | 121,226 | 175,382 |  |
Goodwill and other intangible assets | 243,145 | 251,186 |  |
Total assets | 15,226,131 | 12,352,082 |  |
Liabilities |  |  |  |
Due to subsidiaries | 0 | 0 |  |
Other liabilities | 792,771 | 301,684 |  |
Total liabilities | 9,538,250 | 6,309,911 |  |
Shareholders’ Equity |  |  |  |
Preference shares: $1.00 par value – 16,000,000 shares issued and outstanding at December 31, 2017 (2016 – 16,000,000) | 400,000 | 400,000 |  |
Common shares: $1.00 par value – 40,023,789 shares issued and outstanding at December 31, 2017 (2016 – 41,187,413) | 40,024 | 41,187 |  |
Additional paid-in capital | 37,355 | 216,558 |  |
Accumulated other comprehensive income | 224 | 1,133 |  |
Retained earnings | 3,913,772 | 4,207,699 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 15,226,131 | 12,352,082 |  |
Parent Company |  |  |  |
Assets |  |  |  |
Fixed maturity investments trading, at fair value - amortized cost $104,521 at December 31, 2017 (2016 - $22,402) | 103,638 | 22,119 |  |
Short term investments, at fair value (Notes 5 and 6) | 121,628 | 365,155 |  |
Cash and cash equivalents | 14,656 | 7,067 | $ 10,185 | $ 5,986
Investments in subsidiaries | 4,105,760 | 4,074,769 |  |
Due from subsidiaries | 4,602 | 7,413 |  |
Accrued investment income | 405 | 105 |  |
Receivable for investments sold | 135 | 136 |  |
Other assets | 433,468 | 410,757 |  |
Goodwill and other intangible assets | 124,960 | 130,407 |  |
Total assets | 4,909,252 | 5,017,928 |  |
Liabilities |  |  |  |
Notes and bank loans payable | 417,000 | 117,000 |  |
Due to subsidiaries | 82,579 | 14,644 |  |
Other liabilities | 18,298 | 19,707 |  |
Total liabilities | 517,877 | 151,351 |  |
Shareholders’ Equity |  |  |  |
Preference shares: $1.00 par value – 16,000,000 shares issued and outstanding at December 31, 2017 (2016 – 16,000,000) | 400,000 | 400,000 |  |
Common shares: $1.00 par value – 40,023,789 shares issued and outstanding at December 31, 2017 (2016 – 41,187,413) | 40,024 | 41,187 |  |
Additional paid-in capital | 37,355 | 216,558 |  |
Accumulated other comprehensive income | 224 | 1,133 |  |
Retained earnings | 3,913,772 | 4,207,699 |  |
Total shareholders’ equity | 4,391,375 | 4,866,577 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | $ 4,909,252 | $ 5,017,928 |  |

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