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Consolidated Statements Of Total Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Revenues: |  |
Net premiums earned | $ 94,950 | $ 91,799
Net investment income | 112,117 | 76,468
Other-than-temporary impairments: |  |
Total other-than-temporary impairment losses | (4,311) | (1,713)
Portion of loss recognized in other comprehensive income | 1,240 |
Net other-than-temporary impairment losses recognized in earnings | (3,071) | (1,713)
Net realized investment gains | 392 | 2,450
Change in fair value of credit derivatives: |  |
Realized gains (losses) and other settlements | 3,254 | 5,323
Unrealized losses | (10,476) | (14,226)
Net change in fair value of credit derivatives | (7,222) | (8,903)
Derivative products | 46,957 | 21,004
Other income | 64,793 | 28,303
Income (loss) on variable interest entities | 15,220 | (6,125)
Total revenues before expenses and reorganization items | 324,136 | 203,283
Expenses: |  |
Losses and loss expenses | (2,320) | 919,647
Underwriting and operating expenses | 36,534 | 45,467
Interest expense | 33,839 | 30,260
Total expenses before reorganization items | 68,053 | 995,374
Pre-tax gain (loss) from continuing operations before reorganization items | 256,083 | (792,091)
Reorganization items | 2,461 | 24,805
Pre-tax gain (loss) from continuing operations | 253,622 | (816,896)
Provision for income taxes | 300 | 2,350
Net income (loss) | 253,322 | (819,246)
Less: net gain attributable to the noncontrolling interest | 2 | 33
Net income (loss) attributable to common shareholders | 253,320 | (819,279)
Other comprehensive income (loss), after tax: |  |
Net income (loss) | 253,322 | (819,246)
Unrealized (losses) gains on securities, net of deferred income taxes of $0 | (20,904) | 75,425
Less: reclassification adjustment for net (loss) gain included in net income (loss) | (4,052) | 1,015
Gain on foreign currency translation, net of deferred income taxes of $0 | 3,213 | 4,384
Amortization of postretirement benefit, net of tax | (3,792) | 711
Total other comprehensive (loss) income, net of tax | (17,431) | 79,505
Total comprehensive income (loss) | 235,891 | (739,741)
Less: comprehensive income (loss) attributable to the noncontrolling interest: |  |
Net income | 2 | 33
Currency translation adjustments | 31 | 44
Total comprehensive income (loss) attributable to Ambac Financial Group, Inc. | $ 235,858 | $ (739,818)
Net income (loss) per share attributable to Ambac Financial Group, Inc. common shareholders | $ 0.84 | $ (2.71)
Net income (loss) per diluted share attributable to Ambac Financial Group, Inc. common shareholders | $ 0.84 | $ (2.71)
Weighted-average number of common shares outstanding: |  |
Basic | 302,466,328 | 302,355,243
Diluted | 302,580,597 | 302,355,243

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