STOCKHOLDERS' EQUITY (Textual) (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended
	Dec. 31, 2014 class	Dec. 31, 2013	Dec. 31, 2012	Jul. 13, 2011 directors	Dec. 31, 2013	Dec. 31, 2008	Mar. 31, 2011 quarters
Class of Stock [Line Items]
Number of classes of preferred stock	4
Accretion of discount on preferred stock	$ 0	$ 3,643,000	$ 3,554,000
Other comprehensive income (loss)	2,609,000	(37,757,000)	29,193,000
Other comprehensive income, tax	1,800,000	(6,500,000)	(6,400,000)
Preferred Class A [Member]
Class of Stock [Line Items]
Redemption price, percentage of par value	105.00%
Preferred Class A [Member] | Minimum [Member]
Class of Stock [Line Items]
Preferred stock dividend rate percentage	6.00%
Preferred Class A [Member] | Maximum [Member]
Class of Stock [Line Items]
Preferred stock dividend rate percentage	12.00%
Preferred Class B [Member] | Minimum [Member]
Class of Stock [Line Items]
Preferred stock dividend rate percentage	7.00%
Preferred Class B [Member] | Maximum [Member]
Class of Stock [Line Items]
Preferred stock dividend rate percentage	15.00%
Preferred Class C [Member]
Class of Stock [Line Items]
Preferred stock dividend rate period (5% first five years then 9% thereafter)	5 years
Discount on issuance of preferred stock		17,300,000
Preferred stock discount, accretion period		5 years
Preferred Class C [Member] | Previously issued under U.S. Treasury's Troubled Asset Relief Program's Capital Purchase Program
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)						$ 1.00
Preferred stock, shares issued						295,400
Preferred stock, liquidation preference (in dollars per share)						$ 1,000
Dividend Rates, Class C Preferred Stock (Dividend Rate Increase February 15, 2014) and Class D Preferred Stock	Class C Preferred Stock carried an annual dividend rate equal to 5% for the first five years, payable quarterly in arrears beginning February 15, 2009. The annual dividend rate increased to 9% per annum on February 15, 2014.
Preferred Class D [Member] | Previously issued under U.S. Treasury's Troubled Asset Relief Program's Capital Purchase Program
Class of Stock [Line Items]
Preferred stock dividend rate percentage	9.00%
Preferred stock, par value (in dollars per share)						$ 1.00
Preferred stock, shares issued						14,770
Preferred stock, liquidation preference (in dollars per share)						$ 1,000
Dividend Rates, Class C Preferred Stock (Dividend Rate Increase February 15, 2014) and Class D Preferred Stock	Class D Preferred Stock carries an annual dividend rate equal to 9%, payable quarterly in arrears beginning February 15, 2009.
Preferred Class C & D [Member]
Class of Stock [Line Items]
Prior dividend deferral, conferral of right to elect directors (number of directors)				2
Number of directors elected as a result of prior dividend deferral				2
Dividends deferred and accrued on preferred stock	77,800,000	77,800,000			77,800,000
Dividends on preferred stock if the Company had continued to declare and accrue dividends	33,200,000				4,100,000
Dividends that would have been accrued and deferred as of the balance sheet date if the Company had continued to declare and accrue dividends	115,100,000
Preferred Class C & D [Member] | Previously issued under U.S. Treasury's Troubled Asset Relief Program's Capital Purchase Program
Class of Stock [Line Items]
Preferred stock						295,400,000
Preferred Class C & D [Member] | Minimum [Member]
Class of Stock [Line Items]
Number of quarterly periods that dividends have been deferred on preferred stock							6
Accumulated Other Comprehensive Income (Loss)
Class of Stock [Line Items]
Other comprehensive income (loss)	2,609,000	(37,757,000)	29,193,000
Dividend Rate First Five Years [Member] | Preferred Class C [Member] | Previously issued under U.S. Treasury's Troubled Asset Relief Program's Capital Purchase Program
Class of Stock [Line Items]
Preferred stock dividend rate percentage	5.00%
Dividend Rate After First Five Years [Member] | Preferred Class C [Member] | Previously issued under U.S. Treasury's Troubled Asset Relief Program's Capital Purchase Program
Class of Stock [Line Items]
Preferred stock dividend rate percentage	9.00%
Regularly Scheduled Dividend Payments [Member] | Preferred Class C & D [Member]
Class of Stock [Line Items]
Dividends deferred and accrued on preferred stock	68,400,000	68,400,000			68,400,000
Cumulative Dividends On Unpaid Regular Dividends [Member] | Preferred Class C & D [Member]
Class of Stock [Line Items]
Dividends deferred and accrued on preferred stock	$ 9,400,000	$ 9,400,000			$ 9,400,000