Note 13 - Stock Option Plans (Detail) - Stock Option Activity (USD $)	12 Months Ended		253 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012
Options outstanding at January 1 (in Shares)	342,500	194,000
Options cancelled (in Shares)	(14,000)	(16,000)	128,680
Options granted (in Shares)	17,000	164,500	1,198,500
Options outstanding at December 31 (in Shares)	345,500	342,500	345,500
Options available for grant at December 31 (in Shares)	368,500	405,500	368,500
Options exercisable at December 31 (in Shares)	220,833	172,000	220,833
Granted	$ 1.64	$ 1.63
Outstanding	$ 1.72	$ 1.78	$ 1.72
Granted	$ 1.64	$ 1.63
Outstanding at December 31	$ 1.72	$ 1.78	$ 1.72
Exercisable at December 31	$ 1.77	$ 1.95	$ 1.77
Minimum [Member]
Granted		$ 1.52
Outstanding	$ 0.69	$ 0.69	$ 0.69
Granted		$ 1.52
Outstanding at December 31	$ 0.69	$ 0.69	$ 0.69
Maximum [Member]
Granted		$ 1.72
Outstanding	$ 3.84	$ 3.84	$ 3.84
Granted		$ 1.72
Outstanding at December 31	$ 3.84	$ 3.84	$ 3.84