Acquisition/Disposition of Noncontrolling Interest (Details) (USD $)
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1 Months Ended |
12 Months Ended |
1 Months Ended |
3 Months Ended |
12 Months Ended |
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Mar. 31, 2014
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Dec. 31, 2014
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Dec. 31, 2013
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Jul. 31, 2013
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Jan. 31, 2013
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Jun. 30, 2012
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Sep. 30, 2013
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Dec. 31, 2012
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Dec. 31, 2010
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Jul. 02, 2013
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Acquisition of noncontrolling interest |
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Amount paid for transfer of remaining ownership |
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$ 350,000us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries |
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Cash consideration received on sale of business |
10,200,000us-gaap_ProceedsFromDivestitureOfBusinesses |
10,200,000us-gaap_ProceedsFromDivestitureOfBusinesses |
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Gain on sale of business |
1,200,000us-gaap_GainLossOnSaleOfBusiness |
1,208,000us-gaap_GainLossOnSaleOfBusiness |
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Proceeds on sale of business used to reduce legacy repurchase liability |
3,000,000imh_ProceedsFromDivestitureOfBusinessesUsedToReduceLegacyRepurchaseLiability |
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AmeriHome |
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Acquisition of noncontrolling interest |
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Percentage of ownership interest in acquiree for which option to purchase is available in the purchase agreement |
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39.00%imh_BusinessAcquisitionCallOptionPurchasedToPurchaseAdditionalPercentageOfOwnershipInterestInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
39.00%imh_BusinessAcquisitionCallOptionPurchasedToPurchaseAdditionalPercentageOfOwnershipInterestInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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Multiplier at which option to purchase ownership interest in acquiree is available in purchase agreement |
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1.5imh_BusinessAcquisitionCallOptionMultiplierForPurchaseOfAdditionalPercentageOfOwnershipInterestInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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Maximum amount considered for purchase of ownership interest in acquiree available in purchase agreement |
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5,000,000imh_BusinessAcquisitionCallOptionMaximumAmountForPurchaseOfAdditionalPercentageOfOwnershipInterestInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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Additional cash to be paid for purchase of ownership interest in acquiree available in purchase agreement |
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550,000imh_BusinessAcquisitionCallOptionAdditionalCashToBePaidForPurchaseOfAdditionalPercentageOfOwnershipInterestInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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Option term |
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3 years |
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Percentage of ownership interest in acquiree that can be sold by the noncontrolling interest holder to the company |
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49.00%imh_BusinessAcquisitionPutOptionWrittenToPurchaseAdditionalPercentageOfOwnershipInterestInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
49.00%imh_BusinessAcquisitionPutOptionWrittenToPurchaseAdditionalPercentageOfOwnershipInterestInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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Maximum amount at which ownership interest in acquiree that can be sold by the noncontrolling interest holder to the company |
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5,000,000imh_BusinessAcquisitionPutOptionMaximumAmountWrittenToPurchaseAdditionalPercentageOfOwnershipInterestInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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Ownership interest agreed to be acquired (as a percent) |
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1.50%imh_BusinessAcquisitionPercentageOfOwnershipInterestAgreedToBeAcquiredInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
27.50%imh_BusinessAcquisitionPercentageOfOwnershipInterestAgreedToBeAcquiredInAcquiree / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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Transfer of remaining ownership (as a percent) |
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20.00%imh_MinorityInterestDecreaseFromPurchaseOfInterestPercentage / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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20.00%imh_MinorityInterestDecreaseFromPurchaseOfInterestPercentage / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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Amount paid for transfer of remaining ownership |
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350,000us-gaap_PaymentsToAcquireAdditionalInterestInSubsidiaries / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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IMH common stock issued for settlement |
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1,100,000us-gaap_StockIssuedDuringPeriodValueNewIssues / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
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Ownership interest (as a percent) |
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100.00%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember |
IRES | AmeriHome |
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Acquisition of noncontrolling interest |
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Ownership interest acquired (as a percent) |
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51.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember / dei_LegalEntityAxis = imh_IntegratedRealEstateServiceCorporationMember |
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Cash payment |
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1,100,000us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember / dei_LegalEntityAxis = imh_IntegratedRealEstateServiceCorporationMember |
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Note payable incurred |
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$ 720,000us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred / us-gaap_BusinessAcquisitionAxis = imh_AmeriHomeMortgageCorporationMember / dei_LegalEntityAxis = imh_IntegratedRealEstateServiceCorporationMember |
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