Note 9 - Notes Payable (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	$ 3,500,000
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)	$ 3,500,000
Debt Instrument, Basis Spread on Variable Rate	0.50%
Prime Rate	3.25%	3.25%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.60%