SUMMARY OF QUARTERLY FINANCIAL DATA (UNAUDITED) (Details 2) (USD $)	3 Months Ended			12 Months Ended			3 Months Ended				6 Months Ended	12 Months Ended	3 Months Ended			12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Class A Common Stock	Dec. 31, 2012 Class B Common Stock	Dec. 31, 2014 RPG segment TRS division	Mar. 31, 2012 TCB	Sep. 30, 2012 TCB	Dec. 31, 2012 TCB	Dec. 31, 2012 FCB	Sep. 30, 2012 FCB	Mar. 31, 2012 FCB	Dec. 31, 2013 FCB	Dec. 31, 2012 FCB
Consolidated quarterly financial data
Bargain purchase gain, pre-tax										$ 27,900,000	$ (285,000)	$ 27,614,000	$ 712,000	$ 27,100,000		$ 1,324,000	$ 27,824,000
Legal expenses				4,627,000	1,866,000	3,969,000			1,400,000
Reversal of incentive compensation accruals based on revised payout estimates	3,300,000
Increases in non-interest expenses		3,000,000								939,000
Prepayment of FHLB advances			81,000,000												81,000,000
Weighted average cost (as a percent)			3.56%												3.56%
Early termination penalty			$ 2,400,000											$ 63,000	$ 2,400,000
Special Common Stock Dividend Declared							$ 1.10	$ 1.00