SUMMARY OF QUARTERLY CONSOLIDATED FINANCIAL INFORMATION - Schedule of Quarterly Unaudited Summary Information (Details) (USD $)	0 Months Ended							1 Months Ended	3 Months Ended																4 Months Ended	12 Months Ended
	Dec. 18, 2014	Sep. 18, 2014	Jun. 17, 2014	Mar. 19, 2014	Dec. 17, 2013	Sep. 18, 2013	Jun. 03, 2013	Jan. 31, 2014	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		May 15, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Interest income									$ 85,124,000		$ 97,587,000		$ 92,656,000		$ 71,490,000		$ 26,492,000		$ 21,885,000		$ 22,999,000		$ 16,191,000			$ 346,857,000		$ 87,567,000		$ 33,759,000
Interest expense									31,892,000		33,307,000		36,512,000		38,997,000		8,031,000		3,443,000		2,651,000		899,000			140,708,000		15,024,000		704,000
Net Interest Income									53,232,000		64,280,000		56,144,000		32,493,000		18,461,000		18,442,000		20,348,000		15,292,000			206,149,000		72,543,000		33,055,000
Impairment
Other-than-temporary impairment (OTTI) on securities								1,000,000	448,000		0		615,000		328,000		1,237,000		0		3,756,000		0			1,391,000		4,993,000		0
Valuation provision on loans and real estate owned									8,300,000		1,134,000		293,000		164,000		461,000		0		0		0			9,891,000		461,000		0
Total Impairment Charges									8,748,000		1,134,000		908,000		492,000		1,698,000		0		3,756,000		0			11,282,000		5,454,000		0
Net interest income after impairment									44,484,000		63,146,000		55,236,000		32,001,000		16,763,000		18,442,000		16,592,000		15,292,000			194,867,000		67,089,000		33,055,000
Other income									40,085,000	[1]	122,064,000	[1]	177,889,000	[1]	35,050,000	[1]	83,804,000	[1]	56,195,000	[1]	98,182,000	[1]	2,827,000	[1]		375,088,000	[1]	241,008,000	[1]	17,423,000
Operating expenses									40,167,000		25,311,000		29,522,000		9,899,000		20,386,000		11,492,000		5,552,000		5,044,000			104,899,000		42,474,000		9,231,000
Income (Loss) Before Income Taxes									44,402,000		159,899,000		203,603,000		57,152,000		80,181,000		63,145,000		109,222,000		13,075,000			465,056,000		265,623,000		41,247,000
Income tax expense									(6,526,000)		7,801,000		21,395,000		287,000		0		0		0		0		0	22,957,000		0		0
Net Income (Loss)									50,928,000		152,098,000		182,208,000		56,865,000		80,181,000		63,145,000		109,222,000		13,075,000			442,099,000		265,623,000		41,247,000
Noncontrolling Interests in Income (Loss) of Consolidated Subsidiaries									(3,302,000)		25,726,000		58,705,000		8,093,000		(326,000)		0		0		0			89,222,000		(326,000)		0
Net Income (Loss) Attributable to Common Stockholders									$ 54,230,000		$ 126,372,000		$ 123,503,000		$ 48,772,000		$ 80,507,000		$ 63,145,000		$ 109,222,000		$ 13,075,000			$ 352,877,000		$ 265,949,000		$ 41,247,000
Net Income Per Share of Common Stock
Basic (in dollars per share)									$ 0.38		$ 0.89		$ 0.91		$ 0.39		$ 0.64		$ 0.50		$ 0.86		$ 0.10			$ 2.59		$ 2.10		$ 0.33
Diluted (in dollars per share)									$ 0.38		$ 0.88		$ 0.88		$ 0.38		$ 0.62		$ 0.49		$ 0.85		$ 0.10			$ 2.53		$ 2.07		$ 0.33
Weighted Average Number of Shares of Common Stock Outstanding
Basic (in shares)									141,395,307		141,211,580		136,465,454		126,604,510		126,593,203		126,536,394		126,512,823		126,512,823			136,472,865		126,539,024		126,512,823
Diluted (in shares)									144,294,088		144,166,601		139,668,128		129,919,967		129,898,247		129,944,643		128,329,744		126,512,823			139,565,709		128,684,128		126,512,823
Dividends Declared per Share of Common Stock (in dollars per share)	$ 0.38	$ 0.35	$ 0.5	$ 0.35	$ 0.5	$ 0.35	$ 0.14		$ 0.38		$ 0.35		$ 0.5		$ 0.35		$ 0.5		$ 0.35		$ 0.14		$ 0			$ 1.58		$ 0.99		$ 0

[1] Earnings from investments in equity method investees is included in other income.