Note 4 - Accounting For Stock-Based Compensation (Detail) - Stock Option Plan Activity (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Exercisable options at the end of the period	488,513
Exercisable options at the end of the period (in Dollars per share)	$ 1.20
Exercisable options at the end of the period	4 years 299 days
Exercisable options at the end of the period (in Dollars)	$ 78
Beginning of Period [Member]
Outstanding at the beginning of the period	792,763
Outstanding at the beginning of the period (in Dollars per share)	$ 1.33
Outstanding at the beginning of the period	6 years 321 days
Outstanding at the beginning of the period (in Dollars)	411
Outstanding at the end of the period	6 years 321 days
End of Period [Member]
Outstanding at the beginning of the period	6 years 47 days
Outstanding at the end of the period	792,763
Outstanding at the end of the period (in Dollars per share)	$ 1.33
Outstanding at the end of the period	6 years 47 days
Outstanding at the end of the period (in Dollars)	$ 81