SCHEDULE III REAL ESTATE ASSETS AND ACCUMULATED DEPRECIATION AND AMORTIZATION (Reconciliation) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Real Estate
Balance at the beginning of the year	$ 668,018	[1]	$ 326,154	[1]	$ 110,335	[1]
Acquisitions	227,339	[1],[2]	342,985	[1],[2]	212,152	[1],[2]
Improvements	36,942	[1]	24,670	[1]	8,284	[1]
Write-off of fully depreciated and fully amortized assets	(10,362)	[1]	(5,835)	[1]	(3,360)	[1]
Impairments	(697)		(2,025)		0
Loss due to property damages	(707)		0		0
Sales	(1,274)	[1]	(17,931)	[1]	(1,257)	[1]
Balance at the end of the year	919,259	[1]	668,018	[1]	326,154	[1]
Accumulated depreciation and amortization:
Balance at the beginning of the year	29,859	[2]	8,521	[2]	2,583	[2]
Depreciation and amortization expense	44,848	[2]	28,956	[2]	9,305	[2]
Write-off of fully depreciated and fully amortized assets	(10,362)	[2]	(5,835)	[2]	(3,360)	[2]
Impairments	(118)	[2]	(638)	[2]	0	[2]
Sales	(56)	[2]	(1,145)	[2]	(7)	[2]
Balance at the end of the year	$ 64,171	[2]	$ 29,859	[2]	$ 8,521	[2]

[1] Amounts include real estate held for sale.

[2] Acquisitions includes properties which the Company acquired through foreclosure on or to which it otherwise received title.