Note 13 - Shareholders Equity (Details) (USD $)	0 Months Ended	12 Months Ended			0 Months Ended	3 Months Ended		12 Months Ended		3 Months Ended	12 Months Ended					12 Months Ended			12 Months Ended	1 Months Ended	10 Months Ended	3 Months Ended
	Mar. 02, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 02, 2012 Largest Single Investor [Member]	Sep. 30, 2013 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2013 Restricted Stock Units (RSUs) [Member]	Dec. 31, 2013 Employee Stock Option [Member] Minimum [Member]	Dec. 31, 2013 Employee Stock Option [Member] Maximum [Member]	Dec. 31, 2013 Note Converted During Fourth Quarter [Member] Unsecured Convertible Notes [Member]	Dec. 31, 2013 2008 Incentive Stock Plan [Member] Director [Member]	Dec. 31, 2013 2008 Incentive Stock Plan [Member]	Dec. 31, 2013 2008 Incentive Stock Plan [Member] Minimum [Member]	Dec. 31, 2013 2008 Incentive Stock Plan [Member] Maximum [Member]	Mar. 02, 2012 Included in One Unit [Member]	Dec. 31, 2012 1994 Employee Stock Purchase Plan [Member]	Dec. 31, 2011 1994 Employee Stock Purchase Plan [Member]	Dec. 31, 2013 1994 Employee Stock Purchase Plan [Member]	Dec. 31, 2013 2013 Employee Stock Purchase Plan [Member]	Nov. 30, 2013 Employee Severance [Member]	Oct. 31, 2013 Employee Severance [Member]	Dec. 31, 2013 Unsecured Convertible Notes [Member]	Jun. 30, 2013 Unsecured Convertible Notes [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]
Note 13 - Shareholders Equity (Details) [Line Items]
Debt Instrument, Face Amount (in Dollars)																						$ 7,600,000
Debt Instrument, Convertible, Conversion Price (in Dollars per share)																						$ 0.23
Share Price (in Dollars per share)																								$ 0.26	$ 0.78
Debt Instrument, Unamortized Discount (in Dollars)		2,368,000	48,000																			2,700,000
Debt Conversion, Converted Instrument, Amount (in Dollars)		1,500,000																				500,000	1,000,000
Debt Conversion, Converted Instrument, Shares Issued																						2,200,000	4,300,000
Interest Expense (in Dollars)		842,000	511,000	861,000						204,000
Proceeds from Issuance or Sale of Equity (in Dollars)	4,900,000				1,000,000
Partners' Capital Account, Units, Sold in Private Placement	19,600,000
Common Stock, Shares, Issued		51,421,937,000	44,698,650,000												1
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized												5,000,000						600,000	5,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant												2,400,000							4,900,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period												10 years								1 year	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						1 year		1 year	4 years		1 year		3 years	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number																				70,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value (in Dollars per share)																				$ 0.23
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period						51,219
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period						14,634
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number							36,585
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)				$ 0.47		$ 0.41
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)		189,000	228,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		1 year 109 days	1 year
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)		$ 0.21	$ 0.15
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)		5,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value (in Dollars)		222,000	106,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value (in Dollars)		$ 222,000	$ 106,000
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent		85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period																185,515	156,618		176,548