Note 5 - Lease Receivable (Detail) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Other Receivables	$ 3,160,000	$ 2,089,000
Lease Purchase Agreement [Member]
Other Receivables	1,100,000
Allowance for Loans and Leases Receivable [Member]
Valuation Allowances and Reserves, Balance	$ 31,000