Note 11 - Mortgages and Other Financing Receivables (Detail) - Mortgage Loans and Other Financing Receivables (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Balance at January 1	$ 102,972	$ 108,493	$ 131,332
Additions:
New mortgage loans	29,496	14,297	1,411
Deductions:
Loan impairments			(700)
Balance at December 31	70,704	102,972	108,493
Additions Under Existing Mortgage Loans [Member]
Additions:
Other additions	895		3,047
Foreign Currency Translation [Member]
Additions:
Other additions	1,181		3,923
Amortization of Loan Discounts [Member]
Additions:
Other additions	247	247	247
Loan Repayments [Member]
Deductions:
Loan repayments	(60,740)	(15,803)	(24,860)
Charge Off/Foreign Currency Translation [Member]
Deductions:
Other deductions	(430)	(863)	(3,101)
Collections of Principal [Member]
Deductions:
Loan repayments	(2,861)	(3,345)	(2,726)
Amortization of Loan Costs [Member]
Deductions:
Other deductions	$ (56)	$ (54)	$ (80)