Note 14 - Employee Equity Incentive Plans (Detail) - Stock Options Oustanding (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
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 0 - .20 [Member] | Outstanding [Member]
Outstanding Stock Options (in Shares)	3,428,500	3,376,000
Weighted Average Remaining Contractual Life	3 years 7 days	3 years 9 months
Weighted Average Outstanding Strike Price	$ 0.15	$ 0.15
Range 0 - .20 [Member] | Vested [Member]
Outstanding Stock Options (in Shares)	2,035,083	1,547,500
Weighted Average Remaining Contractual Life	2 years 6 months	3 years 7 days
Weighted Average Outstanding Strike Price	$ 0.17	$ 0.20
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 .21-.29 [Member] | Outstanding [Member]
Outstanding Stock Options (in Shares)	2,550,000	2,785,000
Weighted Average Remaining Contractual Life	1 year 65 days	2 years 29 days
Weighted Average Outstanding Strike Price	$ 0.26	$ 0.26
Range .21-.29 [Member] | Vested [Member]
Outstanding Stock Options (in Shares)	2,550,000	2,785,000
Weighted Average Remaining Contractual Life	1 year 65 days	2 years 29 days
Weighted Average Outstanding Strike Price	$ 0.26	$ 0.26
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 .30 -.49 [Member] | Outstanding [Member]
Outstanding Stock Options (in Shares)	755,000	875,000
Weighted Average Remaining Contractual Life	288 days	1 year 328 days
Weighted Average Outstanding Strike Price	$ 0.45	$ 0.45
Range .30 -.49 [Member] | Vested [Member]
Outstanding Stock Options (in Shares)	755,000	875,000
Weighted Average Remaining Contractual Life	288 days	1 year 328 days
Weighted Average Outstanding Strike Price	$ 0.45	$ 0.45
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
Range .50 -.70 [Member] | Outstanding [Member]
Outstanding Stock Options (in Shares)	3,719,000	4,122,000
Weighted Average Remaining Contractual Life	354 days	1 year 343 days
Weighted Average Outstanding Strike Price	$ 0.60	$ 0.60
Range .50 -.70 [Member] | Vested [Member]
Outstanding Stock Options (in Shares)	3,719,000	4,122,000
Weighted Average Remaining Contractual Life	354 days	1 year 343 days
Weighted Average Outstanding Strike Price	$ 0.60	$ 0.60
Minimum [Member]
Strike Price Range	$ 0.00	$ 0.00
Maximum [Member]
Strike Price Range	$ 0.70	$ 0.70
Outstanding [Member]
Outstanding Stock Options (in Shares)	10,452,500	11,158,000
Weighted Average Remaining Contractual Life	1 year 248 days	2 years 189 days
Weighted Average Outstanding Strike Price	$ 0.36	$ 0.37
Vested [Member]
Outstanding Stock Options (in Shares)	9,059,083	9,329,500
Weighted Average Remaining Contractual Life	1 year 131 days	2 years 58 days
Weighted Average Outstanding Strike Price	$ 0.39	$ 0.42