Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Loans held for sale at fair value	$ 1,335,668	$ 747,593
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	100,000,000us-gaap_PreferredStockSharesAuthorized	100,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	200,000,000us-gaap_CommonStockSharesAuthorized	200,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	27,277,789us-gaap_CommonStockSharesIssued	24,756,411us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	26,745,529us-gaap_CommonStockSharesOutstanding	24,224,151us-gaap_CommonStockSharesOutstanding
Treasury stock, shares	532,260us-gaap_TreasuryStockShares	532,260us-gaap_TreasuryStockShares

Mortgage Warehouse Loans Held For Sale Amount Fair Value Election

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Face amount or stated value per share of common stock.

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