Mortgage Loans on Real Estate (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of mortgage loans:
Balance at beginning of year	$ 87,955,000	$ 63,934,000	$ 109,283,000
Additions:
New mortgage loans	68,530,000	40,641,000	11,286,000
Total additions	68,530,000	40,641,000	11,286,000
Deductions:
Collections of principal	(8,790,000)	(11,819,000)	(50,579,000)
Conversions of real property	0	(3,300,000)	(4,000,000)
Charge-offs	(2,110,000)	(1,501,000)	0
Reclass to other real estate loans	0	0	(2,056,000)
Total deductions	(10,900,000)	(16,620,000)	(56,635,000)
Change in balance due to foreign currency translation	1,402,000	0	0
Balance at end of year	$ 146,987,000	$ 87,955,000	$ 63,934,000