Note 3 - Stock-Based Compensation (Detail) - Option Activity (USD $)	3 Months Ended
	Mar. 31, 2013
Outstanding – December 31, 2012	112,151
Outstanding – December 31, 2012 (in Dollars per share)	$ 12.54
Granted	42,910
Granted (in Dollars per share)	$ 4.83
Exercised	0
Exercised (in Dollars per share)	$ 0
Exercised (in Dollars)	$ 0	[1]
Cancelled/forfeited	(827)
Cancelled/forfeited (in Dollars per share)	$ 12.46
Expired	(15,458)
Expired (in Dollars per share)	$ 15.87
Outstanding at March 31, 2013	138,776
Outstanding at March 31, 2013 (in Dollars per share)	$ 9.78
Outstanding at March 31, 2013	4 years 328 days
Outstanding at March 31, 2013 (in Dollars)	23,139	[1]
Exercisable at March 31, 2013	54,817
Exercisable at March 31, 2013 (in Dollars per share)	$ 14.25
Exercisable at March 31, 2013	1 year 6 months
Exercisable at March 31, 2013 (in Dollars)	$ 0	[1]

[1] The intrinsic value of outstanding and exercisable stock options is determined based on the amount by which the market value of the underlying stock exceeds the exercise price of the option. The per share market value of our Common Stock, as determined by the closing price on March 28, 2013 (the last trading day of the quarter), was $4.91.