v3.8.0.1

Shareholders' Equity - AOCI Components (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance |  |  | $ 1,361,152 |
Other comprehensive income (loss) before reclassifications | $ 14,166 | $ 6,169 | 30,000 | $ 147,097
Amounts reclassified from AOCI to net income, net of tax | (3,650) | (1,202) | 1,123 | 578
Other comprehensive income, after tax | 10,516 | 4,967 | 31,123 | 147,675
Ending balance | 1,421,389 | 1,556,359 | 1,421,389 | 1,556,359
Change in net unrealized gains on investments, including portion attributable to noncontrolling interest [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 27,866 | 93,793 | (20,716) | (54,112)
Other comprehensive income (loss) before reclassifications | 24,994 | 8,899 | 68,803 | 155,024
Amounts reclassified from AOCI to net income, net of tax | (3,650) | (1,202) | 1,123 | 578
Other comprehensive income, after tax | 21,344 | 7,697 | 69,926 | 155,602
Ending balance | 49,210 | 101,490 | 49,210 | 101,490
Foreign currency translation adjustments, including portion attributable to noncontrolling interest [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 7,629 | 25,034 | 35,604 | 30,231
Other comprehensive income (loss) before reclassifications | (10,828) | (2,730) | (38,803) | (7,927)
Amounts reclassified from AOCI to net income, net of tax | 0 | 0 | 0 | 0
Other comprehensive income, after tax | (10,828) | (2,730) | (38,803) | (7,927)
Ending balance | (3,199) | 22,304 | (3,199) | 22,304
AOCI including portion attributable to noncontrolling interest [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 35,495 | 118,827 | 14,888 | (23,881)
Ending balance | 46,011 | 123,794 | 46,011 | 123,794
Change in net unrealized gains on investment attributable to noncontrolling interest [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Ending balance | 0 | 0 | 0 | 0
Foreign currency translation adjustments attributable to noncontrolling interest [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Ending balance | (68) | (82) | (68) | (82)
AOCI attributable to noncontrolling interest [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Ending balance | (68) | (82) | (68) | (82)
Change in net unrealized gains on investments, attributable to Maiden shareholders [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Ending balance | 49,210 | 101,490 | 49,210 | 101,490
Foreign currency translation adjustments, attributable to Maiden shareholders [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Ending balance | (3,131) | 22,386 | (3,131) | 22,386
AOCI attributable to Maiden shareholders [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance |  |  | 14,997 | (23,767)
Ending balance | $ 46,079 | $ 123,876 | $ 46,079 | $ 123,876

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