STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings per share calculations
Net income	$ 100,027	$ 74,171	[1]
Less: Earnings allocated to participating securities	(3)	(160)
Basic EPS - income allocated to common stockholders	100,024	74,011	[1]
Effect of dilutive securities:
Restricted stock units	106	80
Diluted EPS - income allocated to common stockholders	$ 100,130	$ 74,091	[1]
Number of Shares
Weighted average shares outstanding	143,655	141,962
Effect of dilutive securities on weighted average shares outstanding
Stock options (in shares)	6	79
Restricted stock units (in shares)	533	447
Warrants (in shares)	155	144
Total weighted average diluted shares outstanding	144,349	142,632
Earnings per share available to common stockholders
Basic EPS - income allocated to common stockholders (in dollars per share)	$ 0.70	$ 0.52	[1]
Diluted EPS - income allocated to common stockholders (in dollars per share)	$ 0.69	$ 0.52	[1]

[1] Prior periods were restated to reflect the retrospective application of adopting the new accounting guidance related to the Company?s investments in qualified affordable housing projects Accounting Standard Update ("ASU") 2014-01. See Note 10 of the Notes to Consolidated Financial Statements for additional information.