Other Assets - Components of Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Freestanding derivative instruments (IRLCs)	$ 100,735	$ 68,151
Real estate owned, net	87,624	88,362
Deferred debt issuance costs	50,778us-gaap_DeferredFinanceCostsNet	53,909us-gaap_DeferredFinanceCostsNet
Margin receivable on derivative instruments	12,421	14,664
Other	40,520us-gaap_OtherAssetsMiscellaneous	55,708us-gaap_OtherAssetsMiscellaneous
Total other assets	$ 292,078us-gaap_OtherAssets	$ 280,794us-gaap_OtherAssets

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For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

+ References

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- Definition

Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

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- Definition

The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet.

+ References

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Amount of other miscellaneous assets.

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No definition available.

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- Definition

Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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