XML 86 R6.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified | Successor [Member] | Successor [Member] Retained Earnings/Accumulated Deficit [Member] | Successor [Member] Accumulated Other Comprehensive Income (Loss) [Member] | Successor [Member] Preferred Stock [Member] | Successor [Member] Common Stock [Member] | Successor [Member] Additional Paid-in Capital [Member] | Successor [Member] Common Stock Held in Treasury, at Cost [Member] | Successor [Member] Noncontrolling Interest [Member] | Predecessor [Member] | Predecessor [Member] Retained Earnings/Accumulated Deficit [Member] | Predecessor [Member] Accumulated Other Comprehensive Income (Loss) [Member] | Predecessor [Member] Preferred Stock [Member] | Predecessor [Member] Common Stock [Member] | Predecessor [Member] Additional Paid-in Capital [Member] | Predecessor [Member] Common Stock Held in Treasury, at Cost [Member] | Predecessor [Member] Noncontrolling Interest [Member]
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Beginning balance at Dec. 31, 2011 |  |  |  |  |  |  |  |  | $ (3,149,533)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | $ (6,039,922)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | $ 463,259 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | $ 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | $ 3,080 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | $ 2,172,027 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | $ (411,419)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | $ 663,442 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total comprehensive income |  |  |  |  |  |  |  |  | (97,434)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (256,678)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 162,126 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (2,882)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Stock-based compensation |  |  |  |  |  |  |  |  | (664)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (664)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Cost of shares acquired |  |  |  |  |  |  |  |  | 664 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 664 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Ending balance at Dec. 31, 2012 |  |  |  |  |  |  |  |  | (3,246,967)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (6,297,264)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 625,385 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 3,080 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 2,172,027 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (410,755)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 660,560 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total comprehensive income |  |  |  |  |  |  |  |  | 3,522,382 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 3,349,049 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 174,875 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (1,542)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Stock-based compensation |  |  |  |  |  |  |  |  | (60)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (60)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Cost of shares acquired |  |  |  |  |  |  |  |  | 60 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 60 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Elimination of Predecessor Ambac Shareholder equity accounts and noncontrolling interest adjustment |  |  |  |  |  |  |  |  | 0 us-gaap_TemporaryEquityEliminationAsPartofReorganization / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 2,948,275 us-gaap_TemporaryEquityEliminationAsPartofReorganization / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (800,260)us-gaap_TemporaryEquityEliminationAsPartofReorganization / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_TemporaryEquityEliminationAsPartofReorganization / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (3,080)us-gaap_TemporaryEquityEliminationAsPartofReorganization / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (2,172,027)us-gaap_TemporaryEquityEliminationAsPartofReorganization / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 410,695 us-gaap_TemporaryEquityEliminationAsPartofReorganization / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | (383,603)us-gaap_TemporaryEquityEliminationAsPartofReorganization / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Ending balance at Apr. 30, 2013 | 460,415 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 450 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 184,550 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 275,415 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 275,415 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember | 275,415 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total comprehensive income | 516,904 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 505,219 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 11,661 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 24 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |
Stock-based compensation | 1,106 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 1,106 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |
Warrants exercised | 16 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 16 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |
Cost of shares acquired | (19)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | (19)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2013 | 978,422 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 505,219 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 11,661 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 450 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 185,672 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | (19)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 275,439 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total comprehensive income | 691,884 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 484,071 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 208,622 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | (809)us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |
Stock-based compensation | 3,450 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 3,450 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |
Cost of shares acquired | (37)us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | (37)us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |
Warrants exercised | 16 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 16 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | 0 ambc_WarrantExercisedDuringPeriodValue / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2014 | $ 1,673,735 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | $ 989,290 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | $ 220,283 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | $ 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | $ 450 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | $ 189,138 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | $ (56)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember | $ 274,630 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_NoncontrollingInterestMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |  |  |  |  |  |  |  |

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