Note 9 - Warrants (Detail) - Information About Warrants Outstanding (USD $)	6 Months Ended
	Jun. 30, 2012
Warrants (in Shares)	2,476,654
Weighted Average Remaining Contractual Life	4 years 36 days
Weighted Average Exercise Price	$ 2.49
From $1.00 to $2.30 [Member]
Minimum Exercise Price	$ 1.00
Maximum Exercise Price	$ 2.30
Warrants (in Shares)	676,654
Weighted Average Remaining Contractual Life	3 years 292 days
Weighted Average Exercise Price	$ 2.30
From $2.31 to $4.00 [Member]
Minimum Exercise Price	$ 2.31
Maximum Exercise Price	$ 4.00
Warrants (in Shares)	1,800,000
Weighted Average Remaining Contractual Life	4 years 109 days
Weighted Average Exercise Price	$ 2.56