Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Securities available-for-sale, amortized cost (in Dollars)	$ 1,197,922	$ 1,324,408
Common stock par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock shares authorized	100,000,000us-gaap_CommonStockSharesAuthorized	100,000,000us-gaap_CommonStockSharesAuthorized
Common stock shares issued	84,108,607us-gaap_CommonStockSharesIssued	79,901,042us-gaap_CommonStockSharesIssued
Common stock shares outstanding	84,022,118us-gaap_CommonStockSharesOutstanding	79,814,553us-gaap_CommonStockSharesOutstanding
Treasury stock shares	4,207,565us-gaap_TreasuryStockShares	4,207,565us-gaap_TreasuryStockShares

This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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