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Consolidated Statements Of Cash Flows (Debtor-In-Possession) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010
Cash flows from operating activities: |  |
Net loss attributable to common shareholders | $ (1,960,431) | $ (753,199)
Noncontrolling interest in subsidiaries' earnings | 60 | 63
Net loss | (1,960,371) | (753,136)
Adjustments to reconcile net income to net cash used in operating activities: |  |
Depreciation and amortization | 3,733 | 3,645
Amortization of bond premium and discount | (186,314) | (125,884)
Reorganization items | 49,861 | 31,980
Share-based compensation | (15,459) | 5,364
Current income taxes | 73,175 | 443,972
Deferred acquisition costs | 27,139 | 29,055
Unearned premiums, net | (507,174) | (1,443,282)
Losses and loss expenses, net | 1,786,959 | 646,442
Ceded premiums payable | (25,895) | (150,393)
Investment income due and accrued | (262) | 27,996
Premium receivables | 394,117 | 1,295,562
Accrued interest payable | 108,461 | 14,583
Net mark-to-market gains | (31,031) | (2,803,512)
Net realized investment gains | (20,466) | (159,451)
Other-than-temporary impairment charges | 63,843 | 59,803
Variable interest entity activities | 214,368 | 616,688
Other, net | 28,873 | 171,055
Transfers to restricted cash |  | 2,500
Net cash provided by (used in) operating activities | 3,557 | (2,087,013)
Cash flows from investing activities: |  |
Proceeds from sales of bonds | 635,178 | 2,448,814
Proceeds from matured bonds | 675,932 | 701,288
Purchases of bonds | (1,251,271) | (1,124,881)
Change in short-term investments | 208,496 | 253,210
Loans, net | 1,171 | 60,243
Change in swap collateral receivable | (45,380) | 117,143
Other, net | 3,900 | 15,891
Net cash provided by investing activities | 228,026 | 2,471,708
Cash flows from financing activities: |  |
Proceeds received from a newly established variable interest entity | 35,600 |
Dividends paid-subsidiary shares to noncontrolling interest |  | (817)
Proceeds from issuance of investment and repurchase agreements | 123 | 1,315
Payments for investment and repurchase agreement draws | (258,364) | (400,206)
Net cash collateral received | (2,440) | (87,569)
Net cash used in financing activities | (225,081) | (487,277)
Net cash flow | 6,502 | (102,582)
Cash at January 1 | 9,497 | 112,079
Cash at December 31 | 15,999 | 9,497
Supplemental disclosure of cash flow information: |  |
Income taxes | 1,991 |
Interest expense on long-term debt |  | 61,568
Interest on investment agreements | 8,456 | 19,584
Cash receipts and payments related to reorganization items: |  |
Professional fees paid for services rendered in connection with the Chapter 11 proceeding | $ 31,253 |

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