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Consolidated Statements of Total Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified | 8 Months Ended | 4 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2013 Successor Ambac [Member] | Apr. 30, 2013 Predecessor Ambac [Member] | Dec. 31, 2012 Predecessor Ambac [Member]
Revenues: |  |  |
Net premiums earned | $ 213,518 | $ 130,000 | $ 414,604
Net investment income: |  |  |
Securities available-for-sale and short-term | 142,866 | 116,371 | 382,902
Other investments | 3,580 | 369 |
Total net investment income | 146,446 | 116,740 | 382,902
Other-than-temporary impairment losses: |  |  |
Total other-than-temporary impairment losses | (47,418) | (467) | (15,659)
Portion of loss recognized in other comprehensive income | 654 |  | 9,669
Net other-than-temporary impairment losses recognized in earnings | (46,764) | (467) | (5,990)
Net realized investment gains | 4,467 | 53,305 | 72,101
Change in fair value of credit derivatives: |  |  |
Realized gains and other settlements | 9,778 | 3,444 | 13,713
Unrealized gains (losses) | 183,091 | (63,828) | (22,932)
Net change in fair value of credit derivatives | 192,869 | (60,384) | (9,219)
Derivative products | 114,771 | (33,735) | (125,004)
Net realized losses on extinguishment of debt |  |  | (177,580)
Other income | 4,364 | 8,363 | 106,098
(Loss) income on variable interest entities | (48,623) | 426,566 | 27,777
Total revenues before expenses and reorganization items | 581,048 | 640,388 | 685,689
Expenses: |  |  |
Losses and loss (benefit) expenses | (185,138) | (38,056) | 683,630
Insurance intangible amortization | 99,658 |  |
Underwriting and operating expenses | 68,769 | 44,566 | 139,029
Interest expense | 84,950 | 31,025 | 112,320
Total expenses before reorganization items | 68,239 | 37,535 | 934,979
Pre-tax income (loss) from continuing operations before reorganization items | 512,809 | 602,853 | (249,290)
Reorganization items | 493 | (2,745,180) | 7,215
Pre-tax income (loss) from continuing operations | 512,316 | 3,348,033 | (256,505)
Provision for income taxes | 7,514 | 755 | 2,849
Net income (loss) | 504,802 | 3,347,278 | (259,354)
Less: net loss attributable to the noncontrolling interest | (417) | (1,771) | (2,676)
Net income (loss) attributable to common shareholders | 505,219 | 3,349,049 | (256,678)
Other comprehensive income (loss), after tax: |  |  |
Net income (loss) | 504,802 | 3,347,278 | (259,354)
Unrealized (loss) gain on securities, net of deferred income taxes of $0 | (41,910) | 175,347 | 166,252
Gain (loss) on foreign currency translation, net of deferred income taxes of $0 | 43,165 | (428) | (540)
Changes to postretirement benefit, net of tax of $0 | 10,847 | 185 | (3,792)
Total other comprehensive income, net of tax | 12,102 | 175,104 | 161,920
Total comprehensive income (loss) | 516,904 | 3,522,382 | (97,434)
Less: comprehensive loss attributable to the noncontrolling interest: |  |  |
Net loss | (417) | (1,771) | (2,676)
Currency translation adjustments | 441 | 229 | (206)
Total comprehensive income (loss) attributable to Ambac Financial Group, Inc. | $ 516,880 | $ 3,523,924 | $ (94,552)
Net income (loss) per share attributable to Ambac Financial Group, Inc. common shareholders | $ 11.23 | $ 11.07 | $ (0.85)
Net income (loss) per diluted share attributable to Ambac Financial Group, Inc. common shareholders | $ 10.91 | $ 11.07 | $ (0.85)

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