Mortgage Loans on Real Estate (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of mortgage loans:
Balance at beginning of year	$ 188,651	$ 146,987	$ 87,955
Additions:
New mortgage loans	524,088	113,996	68,530
Draws on existing loans	30,550	26,330	0
Total additions	554,638	140,326	68,530
Deductions:
Collections of principal	(80,552)	(49,974)	(8,790)
Conversions of real property	(23,288)	(45,836)	0
Provisions For Loan and Lease Losses Excluding Lease Hold Mortgage	0	0	2,110
Total deductions	(103,840)	(95,810)	(10,900)
Change in balance due to foreign currency translation	(3,957)	(2,852)	1,402
Balance at end of year	$ 635,492	$ 188,651	$ 146,987