Note 11 - Rentals (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Operating Leases, Rent Expense	$ 164,000	$ 176,000
Operating Leases, Future Minimum Payments Total	104,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months	74,000
Operating Leases, Future Minimum Payments, Due in Two Years	29,000
Operating Leases, Future Minimum Payments, Due in Three Years	$ 1,000