Mortgage Loans on Real Estate (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of mortgage loans:
Balance at beginning of year	$ 146,987,000	$ 87,955,000	$ 63,934,000
Additions:
New mortgage loans	113,996,698	68,530,000	40,641,000
Total additions	140,326,444	68,530,000	40,641,000
Deductions:
Collections of principal	(49,973,226)	(8,790,000)	(11,819,000)
Conversions of real property	(45,836,440)	0	(3,300,000)
Provisions For Loan and Lease Losses Excluding Lease Hold Mortgage	0	2,110,000	1,501,000
Total deductions	(95,809,666)	(10,900,000)	(16,620,000)
Change in balance due to foreign currency translation	(2,852,337)	1,402,000	0
Balance at end of year	$ 188,651,441	$ 146,987,000	$ 87,955,000