Note 3 - Investment in Joint Ventures (Detail) (USD $)	1 Months Ended	3 Months Ended			6 Months Ended
	Feb. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Equity Method Investment, Additional Information	20 percent
	$ 9,103,000				$ (9,103,000)
			4,055,000		4,055,000
Related Party Transaction, Amounts of Transaction		14,638		15,574	30,633	31,837
Equity Method Investment Summarized Financial Information Depreciation And Amortization		$ 1,259		$ 1,294	$ 2,519	$ 2,583