Note 10 - Mortgages and Other Financing Receivables (Details) - Mortgage Loans and Other Financing Receivables (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at January 1	$ 70,704	$ 102,972	$ 108,493
Additions:
New mortgage loans	8,527	29,496	14,297
Deductions:
Balance at December 31	30,243	70,704	102,972
Additions Under Existing Mortgage Loans [Member]
Additions:
Other additions	7,810	895
Foreign Currency Translation [Member]
Additions:
Other additions		1,181
Amortization of Loan Discounts [Member]
Additions:
Other additions	653	247	247
Loan Repayments [Member]
Deductions:
Loan repayments	(53,640)	(60,740)	(15,803)
Charge Off/Foreign Currency Translation [Member]
Deductions:
Other deductions	(1,260)	(430)	(863)
Collections of Principal [Member]
Deductions:
Loan repayments	(2,529)	(2,861)	(3,345)
Amortization of Loan Costs [Member]
Deductions:
Other deductions	$ (22)	$ (56)	$ (54)