Consolidated Statements of Income (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income Statement [Abstract]
Interest income	$ 346,857,000		$ 87,567,000		$ 33,759,000
Interest expense	140,708,000		15,024,000		704,000
Net Interest Income	206,149,000		72,543,000		33,055,000
Impairment
Other-than-temporary impairment (OTTI) on securities	1,391,000		4,993,000		0
Valuation provision on loans and real estate owned	9,891,000		461,000		0
Total Impairment Charges	11,282,000		5,454,000		0
Net interest income after impairment	194,867,000		67,089,000		33,055,000
Other Income
Change in fair value of investments in excess mortgage servicing rights	41,615,000		53,332,000		9,023,000
Change in fair value of investments in excess mortgage servicing rights, equity method investees	57,280,000		50,343,000		0
Change in fair value of investments in servicer advances	84,217,000		0		0
Earnings from investments in consumer loans, equity method investees	53,840,000		82,856,000		0
Gain on consumer loans investment	92,020,000		0		0
Gain on settlement of investments, net	35,487,000		52,657,000		0
Other income, net	10,629,000		1,820,000		8,400,000
Total Other Income	375,088,000	[1]	241,008,000	[1]	17,423,000
Operating Expenses
General and administrative expenses	27,001,000		9,975,000		5,878,000
Management fee allocated by Newcastle	0		4,134,000		3,353,000
Management fee to affiliate	19,651,000		11,209,000		0
Incentive compensation to affiliate	54,334,000		16,847,000		0
Loan servicing expense	3,913,000		309,000		0
Total Operating Expenses	104,899,000		42,474,000		9,231,000
Income (Loss) Before Income Taxes	465,056,000		265,623,000		41,247,000
Income tax expense	22,957,000		0		0
Net Income (Loss)	442,099,000		265,623,000		41,247,000
Noncontrolling Interests in Income (Loss) of Consolidated Subsidiaries	89,222,000		(326,000)		0
Net Income (Loss) Attributable to Common Stockholders	$ 352,877,000		$ 265,949,000		$ 41,247,000
Net Income Per Share of Common Stock
Basic (in dollars per share)	$ 2.59		$ 2.10		$ 0.33
Diluted (in dollars per share)	$ 2.53		$ 2.07		$ 0.33
Weighted Average Number of Shares of Common Stock Outstanding
Basic (in shares)	136,472,865		126,539,024		126,512,823
Diluted (in shares)	139,565,709		128,684,128		126,512,823
Dividends Declared per Share of Common Stock (in dollars per share)	$ 1.58		$ 0.99		$ 0

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