Note 14 - Employee Equity Incentive Plans (Detail) - Stock Option Activity (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012 Beginning of Period [Member]	Dec. 31, 2013 End of Period [Member]	Dec. 31, 2012 End of Period [Member]
Number of shares			11,158,000	10,452,500
Weighted average exercise price (per share) (in Dollars per share)			$ 0.37	$ 0.36
Weighted average remaining contractual term (in years)			2 years 189 days	2 years 29 days	1 year 248 days
Aggregate intrinsic value (in Dollars)			$ 0	$ 149,598
Vested and exercisable at March 31, 2013		5,310,333
Vested and exercisable at March 31, 2013 (in Dollars per share)		$ 0.39
Vested and exercisable at March 31, 2013		1 year 131 days
Vested and exercisable at March 31, 2013 (in Dollars)		66,971
Number of shares	0		425,000	50,000
Weighted average exercise price (per share) (in Dollars per share)			$ 0.12	$ 0.14
Number of shares			(265,000)	0
Weighted average exercise price (per share) (in Dollars per share)			$ 0.20	$ 0
Number of shares			(865,500)	(3,852,500)
Weighted average exercise price (per share) (in Dollars per share)			$ 0.43	$ 0.43
Number of shares				6,650,000	10,452,500
Weighted average exercise price (per share) (in Dollars per share)				$ 0.31	$ 0.36
Weighted average remaining contractual term (in years)			2 years 189 days	2 years 29 days	1 year 248 days
Aggregate intrinsic value (in Dollars)				$ 176,275	$ 149,598