Note 14 - Employee Equity Incentive Plans (Detail) - Stock Options Oustanding (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Range 0 - .20 [Member] | Outstanding [Member]
Outstanding Stock Options (in Shares)	3,321,000	3,428,500
Weighted Average Remaining Contractual Life	2 years 284 days	3 years 7 days
Weighted Average Outstanding Strike Price	$ 0.15	$ 0.15
Range 0 - .20 [Member] | Vested [Member]
Outstanding Stock Options (in Shares)	1,981,333	2,035,083
Weighted Average Remaining Contractual Life	2 years 87 days	2 years 6 months
Weighted Average Outstanding Strike Price	$ 0.17	$ 0.17
Range 0 - .20 [Member] | Minimum [Member]
Strike Price Range	$ 0.00	$ 0.00
Range 0 - .20 [Member] | Maximum [Member]
Strike Price Range	$ 0.20	$ 0.20
Range .21-.29 [Member] | Outstanding [Member]
Outstanding Stock Options (in Shares)	925,000	2,550,000
Weighted Average Remaining Contractual Life	1 year 215 days	1 year 65 days
Weighted Average Outstanding Strike Price	$ 0.25	$ 0.26
Range .21-.29 [Member] | Vested [Member]
Outstanding Stock Options (in Shares)	925,000	2,550,000
Weighted Average Remaining Contractual Life	1 year 215 days	1 year 65 days
Weighted Average Outstanding Strike Price	$ 0.25	$ 0.26
Range .21-.29 [Member] | Minimum [Member]
Strike Price Range	$ 0.21	$ 0.21
Range .21-.29 [Member] | Maximum [Member]
Strike Price Range	$ 0.29	$ 0.29
Range .30 -.49 [Member] | Outstanding [Member]
Outstanding Stock Options (in Shares)	455,000	755,000
Weighted Average Remaining Contractual Life	346 days	288 days
Weighted Average Outstanding Strike Price	$ 0.46	$ 0.45
Range .30 -.49 [Member] | Vested [Member]
Outstanding Stock Options (in Shares)	455,000	755,000
Weighted Average Remaining Contractual Life	346 days	288 days
Weighted Average Outstanding Strike Price	$ 0.46	$ 0.45
Range .30 -.49 [Member] | Minimum [Member]
Strike Price Range	$ 0.30	$ 0.30
Range .30 -.49 [Member] | Maximum [Member]
Strike Price Range	$ 0.49	$ 0.49
Range .50 -.70 [Member] | Outstanding [Member]
Outstanding Stock Options (in Shares)	1,949,000	3,719,000
Weighted Average Remaining Contractual Life	1 year 138 days	354 days
Weighted Average Outstanding Strike Price	$ 0.59	$ 0.60
Range .50 -.70 [Member] | Vested [Member]
Outstanding Stock Options (in Shares)	1,949,000	3,719,000
Weighted Average Remaining Contractual Life	1 year 138 days	354 days
Weighted Average Outstanding Strike Price	$ 0.59	$ 0.60
Range .50 -.70 [Member] | Minimum [Member]
Strike Price Range	$ 0.50	$ 0.50
Range .50 -.70 [Member] | Maximum [Member]
Strike Price Range	$ 0.70	$ 0.70
Outstanding [Member]
Outstanding Stock Options (in Shares)	6,650,000	10,452,500
Weighted Average Remaining Contractual Life	2 years 29 days	1 year 248 days
Weighted Average Outstanding Strike Price	$ 0.31	$ 0.36
Vested [Member]
Outstanding Stock Options (in Shares)	5,310,333	9,059,083
Weighted Average Remaining Contractual Life	1 year 255 days	1 year 131 days
Weighted Average Outstanding Strike Price	$ 0.36	$ 0.39
Minimum [Member]
Strike Price Range	$ 0.00	$ 0.00
Maximum [Member]
Strike Price Range	$ 0.70	$ 0.70