Note 4 - Loans - Secured Loans Past Maturity (Detail) $ in Thousands		Jun. 30, 2016 USD ($) Loan MortgageLoan	Dec. 31, 2015 USD ($) MortgageLoan	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans | Loan		1
Principal		$ 90,531	$ 62,740	$ 71,353	$ 71,017
Advances		24	51
Accrued interest		791	372
Loans, net		$ 91,407	$ 63,232
Percent of principal		100.00%	100.00%
Past Maturity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans | MortgageLoan	[1]	1	1
Principal		$ 4,000	$ 4,000
Accrued interest		198	85
Loans, net		$ 4,198	$ 4,085
Percent of principal		4.00%	6.00%

[1] At June 30, 2016 and December 31, 2015, the loan past maturity was not designated non-accrual, as the loan has an LTV substantially below 50%. The borrower has listed the property for sale and – due to the substantial protective equity in the property - it is reasonably assured that the partnership will be paid in full accordance with the note.