MORTGAGE LOAN RECEIVABLES (Details) (USD $)	3 Months Ended				3 Months Ended		12 Months Ended					3 Months Ended	12 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2014 loan	Mar. 31, 2013	Dec. 31, 2013 loan	Dec. 31, 2012 loan	Mar. 31, 2014 Mortgage loan receivables held for investment, at amortized cost	Mar. 31, 2013 Mortgage loan receivables held for investment, at amortized cost	Dec. 31, 2013 Mortgage loan receivables held for investment, at amortized cost	Mar. 31, 2014 First mortgage loan, held for investment	Dec. 31, 2013 First mortgage loan, held for investment	Mar. 31, 2014 Mezzanine loan	Dec. 31, 2013 Mezzanine loan	Mar. 31, 2014 Loan on non-accrual status loan	Dec. 31, 2013 Loan on non-accrual status loan	Mar. 31, 2014 Mortgage loan receivables held for sale	Mar. 31, 2013 Mortgage loan receivables held for sale	Dec. 31, 2013 Mortgage loan receivables held for sale	Mar. 31, 2014 First mortgage loan, held for sale	Dec. 31, 2013 First mortgage loan, held for sale
MORTGAGE LOAN RECEIVABLES
Outstanding Face Amount	$ 849,766,217		$ 990,348,577		$ 687,212,184		$ 549,573,788	$ 546,093,172	$ 420,672,555	$ 141,119,012	$ 128,901,233			$ 162,554,033		$ 440,774,789	$ 162,554,033	$ 440,774,789
Carrying Value	837,087,119		979,567,971		674,980,076		539,078,182					4,620,000	4,620,000	162,107,043		440,489,789	162,107,043	440,489,789
Carrying Value, Gross					677,630,076		541,578,182	537,577,880	413,564,066	140,052,196	128,014,116
Weighted Average Yield (as a percent)					9.51%		9.76%							5.46%		5.47%
Remaining Maturity					2 years 1 month 10 days		2 years 1 month 20 days							7 years 5 months 5 days		9 years 7 months 13 days
Activity in loan portfolio
Balance at the beginning of the period					539,078,182	326,318,550	326,318,550							440,489,789	623,332,620	623,332,620
Origination of mortgage loan receivables					147,570,705	96,414,750								463,575,489	843,902,500
Repayment of mortgage loan receivables					(12,335,575)	(122,063,197)								(316,067)	(545,079)
Proceeds from sales of mortgage loan receivables														(783,762,354)	(947,119,454)
Realized gain on sale of mortgage loan receivables	41,302,665	83,007,462												41,302,665	83,007,462
Transfer between held for investment and held for sale						(8,320,273)									8,320,273
Accretion/amortization of discount, premium and other fees					816,764	1,007,628								817,521
Loan loss provision	150,000	150,000			(150,000)	(150,000)
Balance at the end of the period					674,980,076	293,207,458	539,078,182							162,107,043	610,898,322	440,489,789
Number of mortgage loans impaired	0		0	0
Unamortized discounts included in mortgage loan receivables held for investment, at amortized cost	4,255,164		4,273,890
Number of loans on non-accrual status												1	1
Change in reserve for loan losses
Reserve for loan losses at beginning of period	2,500,000	1,900,000
Reserve for loan losses at end of period	$ 2,650,000	$ 2,050,000