Note 11 - Share Based Compensation (Detail) - Stock option activity (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Options outstanding as of December 31, 2011	916,594
Options outstanding as of December 31, 2011 (in Dollars per share)	$ 4.24
Options granted	20,000
Options granted (in Dollars per share)	$ 5.40
Options exercised	(63,700)
Options exercised (in Dollars per share)	$ 4.86
Options forfeited/cancelled	(24,050)
Options forfeited/cancelled (in Dollars per share)	$ 3.98
Options outstanding as of June 30, 2012	848,844
Options outstanding as of June 30, 2012 (in Dollars per share)	$ 4.23
Options outstanding price range at June 30, 2012	$1.73 - $9.81
Options exercisable as of June 30, 2012	710,400
Options exercisable as of June 30, 2012 (in Dollars per share)	$ 4.57
Intrinsic value of outstanding stock options as of June 30, 2012 (in Dollars)	$ 1,259
Intrinsic value of stock options exercised for the twenty-six week period ended June 30, 2012 (in Dollars)	$ 44