Note 10 - Rentals (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Leases, Rent Expense	$ 1,093,000	$ 339,000	$ 342,000
Operating Leases, Future Minimum Payments Due	1,472,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months	582,000
Operating Leases, Future Minimum Payments, Due in Two Years	342,000
Operating Leases, Future Minimum Payments, Due in Three Years	281,000
Operating Leases, Future Minimum Payments, Due in Four Years	267,000
HAITI
Operating Leases, Future Minimum Payments Due	$ 1,127,000
Lessee Leasing Arrangements, Operating Leases, Term of Contract	8 years 240 days
Prepaid Rent	$ 1,008,000
Georgia [Member]
Operating Leases, Future Minimum Payments Due	$ 196,000
Lessee Leasing Arrangements, Operating Leases, Term of Contract	2 years
Prepaid Rent	$ 170,000