Note 3 - Share-Based Compensation (Detail) - Stock option activity (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Options outstanding as of December 31, 2011		2,145,003	2,511,000
Options outstanding as of December 31, 2011 (in Dollars per share)		$ 1.49
Options outstanding as of December 31, 2011	2 years 51 days	2 years 233 days
Options outstanding as of June 30, 2012	2,145,003		2,511,000
Options outstanding as of June 30, 2012 (in Dollars per share)	$ 1.49
Options outstanding as of June 30, 2012	2 years 51 days	2 years 233 days
Options exercisable as of June 30, 2012	1,441,670
Options exercisable as of June 30, 2012 (in Dollars per share)	$ 1.47
Options exercisable as of June 30, 2012	1 year 219 days