Note 8 - Stockholders' Equity (Details) (USD $) | 3 Months Ended | 12 Months Ended | 153 Months Ended | 156 Months Ended | 124 Months Ended | 40 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 12 Months Ended | 204 Months Ended | |
Sep. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2014 | Mar. 28, 2014 | Dec. 31, 2012 | Nov. 30, 2013 | Dec. 31, 2011 | Dec. 31, 1998 | Dec. 31, 2014 | Mar. 31, 2014 |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Common Stock, Shares Authorized | | 400,000,000 | | 400,000,000 | | 400,000,000 | | 400,000,000 | | 400,000,000 | | 400,000,000 | | | | | | | | 400,000,000 | | |
Common Stock, Par or Stated Value Per Share (in Dollars per share) | | $0.01 | | $0.01 | | $0.01 | | $0.01 | | $0.01 | | $0.01 | | | | | | | | 0.01 | | |
Preferred Stock, Shares Authorized | | 100,000,000 | | 100,000,000 | | 100,000,000 | | 100,000,000 | | 100,000,000 | | 100,000,000 | | | | | | | | 100,000,000 | | |
Preferred Stock, Par or Stated Value Per Share (in Dollars per share) | | $0.01 | | $0.01 | | $0.01 | | $0.01 | | $0.01 | | $0.01 | | | | | | | | 0.01 | | |
Proceeds from Issuance of Preferred Stock and Preference Stock (in Dollars) | | $4,954,000 | | $0 | | | | | | | | | | | | | | | | | | |
Dividends, Preferred Stock (in Dollars) | | 264,000 | | 264,000 | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, New Issues (in Dollars) | | 4,954,000 | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | | 0 | | 0 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | 221,000 | | 125,000 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | | 8,343,000 | [1] | 8,470,336 | [1] | 8,343,000 | [1] | 8,343,000 | [1] | 8,343,000 | [1] | 8,343,000 | [1] | | 8,885,516 | [1] | | | | 8,343,000 | [1] | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in Dollars per share) | | $0 | | $0 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | | 5 years 292 days | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) | | $0.23 | | $0.38 | | | | | | | | | | | | | | | | | | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit (in Dollars per share) | $0.20 | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit (in Dollars per share) | | $5 | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period | | 348,336 | | 540,180 | | | | | | | | | | | | | | | | | | |
Allocated Share-based Compensation Expense (in Dollars) | | 210,000 | | 635,000 | | | | | | | | | | | | | | | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars) | | 229,000 | | | | 229,000 | | 229,000 | | 229,000 | | 229,000 | | | | | | | | 229,000 | | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | | 1 year 109 days | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | | $0.18 | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value (in Dollars) | | 776,000 | | 808,000 | | | | | | | | | | | | | | | | | | |
Warrants Without Expiration Date Outstanding | | 743,500 | | | | 743,500 | | 743,500 | | 743,500 | | 743,500 | | | | | | | | 743,500 | | |
Warrants Without Expiration Date Exercisable | | 118,500 | | | | 118,500 | | 118,500 | | 118,500 | | 118,500 | | | | | | | | 118,500 | | |
Preferred Class A [Member] | Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock Dividends, Shares | | 11,339 | | | | | | | | | | | | | | | | | | | | |
Preferred Units, Outstanding | | 575,762 | | | | 575,762 | | 575,762 | | 575,762 | | 575,762 | | | | | | | | 575,762 | | |
Preferred Class A [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Authorized | | 3,300,000 | | 3,300,000 | | 3,300,000 | | 3,300,000 | | 3,300,000 | | 3,300,000 | | | | | | | | 3,300,000 | | |
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears (in Dollars per share) | | $0.40 | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Redemption Price Per Share (in Dollars per share) | | $4 | | | | $4 | | $4 | | $4 | | $4 | | | | | | | | 4 | | |
Stock Issued During Period, Shares, New Issues | | 0 | | 0 | | | | 765,512 | | | | | | | | | | | | | | |
Proceeds from Issuance of Preferred Stock and Preference Stock (in Dollars) | | | | | | | | 3,062,000 | | | | | | | | | | | | | | |
Conversion of Stock, Shares Converted | | 0 | | 0 | | 189,750 | | | | | | | | | | | | | | | | |
Convertible Preferred Stock, Shares Issued upon Conversion | | 1 | | | | 1 | | 1 | | 1 | | 1 | | | | | | | | 1 | | |
Preferred Stock Dividends, Shares | | 0 | | 0 | | 11,339 | | | | | | | | | | | | | | | | |
Dividends, Preferred Stock (in Dollars) | | | | | | 242,000 | | | | | | | | | | | | | | | | |
Common Stock Dividends, Shares | | | | | | 100,924 | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Outstanding | | 587,101 | | 587,101 | | 587,101 | | 587,101 | | 587,101 | | 587,101 | | | | | | | | 587,101 | | |
Preferred Stock, Liquidation Preference, Value (in Dollars) | | 2,249,000 | | 2,019,000 | | 2,249,000 | | 2,249,000 | | 2,249,000 | | 2,249,000 | | | | | | | | 2,249,000 | | |
Preferred Stock, Liquidation Preference Per Share (in Dollars per share) | | $4 | | | | $4 | | $4 | | $4 | | $4 | | | | | | | | 4 | | |
Preferred Stock, Shares Issued | | 587,101 | | 587,101 | | 587,101 | | 587,101 | | 587,101 | | 587,101 | | | | | | | | 587,101 | | |
Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Dividends Payable (in Dollars) | | 2,249,000 | | | | 2,249,000 | | 2,249,000 | | 2,249,000 | | 2,249,000 | | | | | | | | 2,249,000 | | |
Preferred Class B [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Authorized | | 300,000 | | 300,000 | | 300,000 | | 300,000 | | 300,000 | | 300,000 | | | | | | | | 300,000 | | |
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears (in Dollars per share) | | $0.50 | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Redemption Price Per Share (in Dollars per share) | | $5 | | | | $5 | | $5 | | $5 | | $5 | | | | | | | | 5 | | |
Stock Issued During Period, Shares, New Issues | | 0 | | 0 | | | | | | 97,500 | | | | | | | | | | | | |
Proceeds from Issuance of Preferred Stock and Preference Stock (in Dollars) | | | | | | | | | | 487,500 | | | | | | | | | | | | |
Conversion of Stock, Shares Converted | | | | | | | | | | 30,000 | | | | | | | | | | | | |
Convertible Preferred Stock, Shares Issued upon Conversion | | 1 | | | | 1 | | 1 | | 1 | | 1 | | | | | | | | 1 | | |
Preferred Stock Dividends, Shares | | 0 | | 0 | | | | | | | | | | | | | | | | | | |
Dividends, Preferred Stock (in Dollars) | | | | | | | | | | 51,000 | | | | | | | | | | | | |
Common Stock Dividends, Shares | | | | | | | | | | 35,431 | | | | | | | | | | | | |
Preferred Stock, Shares Outstanding | | 67,500 | | 67,500 | | 67,500 | | 67,500 | | 67,500 | | 67,500 | | | | | | | | 67,500 | | |
Dividends Payable (in Dollars) | | 319,000 | | | | 319,000 | | 319,000 | | 319,000 | | 319,000 | | | | | | | | 319,000 | | |
Preferred Stock, Liquidation Preference, Value (in Dollars) | | 319,000 | | 285,000 | | 319,000 | | 319,000 | | 319,000 | | 319,000 | | | | | | | | 319,000 | | |
Preferred Stock, Liquidation Preference Per Share (in Dollars per share) | | $5 | | | | $5 | | $5 | | $5 | | $5 | | | | | | | | 5 | | |
Preferred Stock, Shares Issued | | 67,500 | | 67,500 | | 67,500 | | 67,500 | | 67,500 | | 67,500 | | | | | | | | 67,500 | | |
Preferred Class C [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Authorized | | 16,250,000 | | 16,250,000 | | 16,250,000 | | 16,250,000 | | 16,250,000 | | 16,250,000 | | | | | | | | 16,250,000 | | |
Convertible Preferred Stock, Shares Issued upon Conversion | | 1 | | | | 1 | | 1 | | 1 | | 1 | | | | | | | | 1 | | |
Preferred Stock, Shares Outstanding | | 16,250,000 | | 16,250,000 | | 16,250,000 | | 16,250,000 | | 16,250,000 | | 16,250,000 | | | | | | | | 16,250,000 | | |
Preferred Stock, Liquidation Preference, Value (in Dollars) | | 6,500,000 | | 6,500,000 | | 6,500,000 | | 6,500,000 | | 6,500,000 | | 6,500,000 | | | | | | | | 6,500,000 | | |
Preferred Stock, Liquidation Preference Per Share (in Dollars per share) | | $0.40 | | | | $0.40 | | $0.40 | | $0.40 | | $0.40 | | | | | | | | 0.4 | | |
Preferred Stock, Shares Issued | | 16,250,000 | | 16,250,000 | | 16,250,000 | | 16,250,000 | | 16,250,000 | | 16,250,000 | | | | | | | | 16,250,000 | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities | | | | | | | | | | | | 0 | | | | | | | | | | |
Series C-2 Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Authorized | | | | | | | | | | | | | | | | | | | | | | 25,000,000 |
Stock Issued During Period, Shares, New Issues | | | | | | | | | | | | | | 25,000,000 | | | | | | | | |
Conversion of Stock, Shares Converted | | 0 | | | | | | | | | | | | | | | | | | | | |
Convertible Preferred Stock, Shares Issued upon Conversion | | 1 | | | | 1 | | 1 | | 1 | | 1 | | | | | | | | 1 | | |
Preferred Stock, Shares Outstanding | | 25,000,000 | | | | 25,000,000 | | 25,000,000 | | 25,000,000 | | 25,000,000 | | | | | | | | 25,000,000 | | |
Preferred Stock, Liquidation Preference, Value (in Dollars) | | 5,000,000 | | | | 5,000,000 | | 5,000,000 | | 5,000,000 | | 5,000,000 | | | | | | | | 5,000,000 | | |
Preferred Stock, Liquidation Preference Per Share (in Dollars per share) | | $0.20 | | | | $0.20 | | $0.20 | | $0.20 | | $0.20 | | | | | | | | 0.2 | | |
Stock Issued During Period, Value, New Issues (in Dollars) | | | | | | | | | | | | | | 5,000,000 | | | | | | | | |
Payments of Stock Issuance Costs (in Dollars) | | | | | | | | | | | | | | 46,000 | | | | | | | | |
Proceeds from Issuance of Private Placement (in Dollars) | | | | | | | | | | | | | | 4,954,000 | | | | | | | | |
Debt Instrument, Convertible, Beneficial Conversion Feature (in Dollars) | | 4,250,000 | | | | | | | | | | | | | | | | | | | | |
Warrants, No Determined Exercise Price [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding (in Dollars) | | 1,750,000 | | | | 1,750,000 | | 1,750,000 | | 1,750,000 | | 1,750,000 | | | | | | | | 1,750,000 | | |
Previous Issuance [Member] | Replacement Options [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Expirations | | 36,668 | | | | | | | | | | | | | 36,666 | | | | | | | |
Warrant [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | | 0 | | 0 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | 0 | | 0 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | | 3,356,750 | | 3,393,418 | | 3,356,750 | | 3,356,750 | | 3,356,750 | | 3,356,750 | | | 3,430,084 | | | | | 3,356,750 | | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in Dollars per share) | | $0 | | $0 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | | minus 5 years 219 days | [2] | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) | | $0 | | $0 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period | | 36,668 | [3] | 36,666 | [3] | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period | | 36,668 | | 36,666 | | | | | | | | | | | | | | | | | | |
Stock Option Plan 1998 [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | | | | 0 | | | | | | | | | | | | | | | | | | |
Incentive Stock Options [Member] | Certain Employees [Member] | Stock Option Plan 2011 [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | -200,000 | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | | 10 years | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) | | $0.22 | | | | | | | | | | | | | | | | | | | | |
Incentive Stock Options [Member] | Stock Option Plan 2011 [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | 4 years | | 4 years | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | 21,000 | | 25,000 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in Dollars per share) | | | | $0.45 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | | 10 years | | 10 years | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | | 25.00% | | 25.00% | | | | | | | | | | | | | | | | | | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit (in Dollars per share) | | $0.20 | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit (in Dollars per share) | | $0.40 | | | | | | | | | | | | | | | | | | | | |
Non-Qualified Stock Options [Member] | Stock Option Plan 2011 [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | | 4 years | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | | | 100,000 | | | | | | | | | | | | | | | | | | |
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, Award Vesting Rights, Percentage | | | | 25.00% | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) | | | | | | | | | | | | | | | | | $0.36 | | | | | |
Stock Option Plan 2011 [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | 221,000 | | | | | | | | | | | | | | | | | | | | |
Non-Plan Options [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | | 0 | | 0 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | | 4,477,500 | | | | 4,477,500 | | 4,477,500 | | 4,477,500 | | 4,477,500 | | | | | | | | 4,477,500 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period | | 98,336 | | 98,332 | | | | | | | | | | | | | | | | | | |
Allocated Share-based Compensation Expense (in Dollars) | | 277,000 | | 401,000 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number | | 6,965,000 | | | | 6,965,000 | | 6,965,000 | | 6,965,000 | | 6,965,000 | | | | | | | | 6,965,000 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | 400,000 | 337,500 | | | | | | | | | | | | | | | | | | | | |
Replacement Options [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | | | | | | | | | | | | | | | | | 405,000 | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | | 0 | | | | 0 | | 0 | | 0 | | 0 | | | | | | | | 0 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | | 135,004 | | | | | | | | | | | | | 134,998 | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Expirations | | 98,336 | | | | | | | | | | | | | 98,332 | | | | | | | |
Class of Warrant or Right, Outstanding | | 0 | | | | 0 | | 0 | | 0 | | 0 | | | | | | | | 0 | | |
Vested Stock Options [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) | | | | $0.36 | | | | | | | | | | | | | | | | | | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit (in Dollars per share) | | $5 | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | | | | $0.34 | | | | | | | | | | | | | | | | | | |
Engineer [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | | | | | | | | | | | | | | | | | 110,000 | | | | |
Stock Option Plan 1998 [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | | | | | | | | | | | | | | | | | | | 2,000,000 | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | | | | | | | | | | | | | | | | | | | 10 years | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum | | | | | | | | | | | | | | | | | | | 10.00% | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date | | | | | | | | | | | | | | | | | | | 110.00% | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | | | | | | | | | | | | | | | | | 5 years | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | | 0 | | | | | | | | | | | | | | | | | | 0 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | 0 | | 0 | | | | | | | | | | | | | | | | 1,823,895 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period | | 0 | | 441,848 | | | | | | | | | | | | | | | | 1,723,895 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | | 100,000 | | | | 100,000 | | 100,000 | | 100,000 | | 100,000 | | | | | | | | 100,000 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | | 100,000 | | | | 100,000 | | 100,000 | | 100,000 | | 100,000 | | | | | | | | 100,000 | | |
Stock Option Plan 2011 [Member] | | | | | | | | | | | | | | | | | | | | | | |
Note 8 - Stockholders' Equity (Details) [Line Items] | | | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | | | | | | | | | | | | | | | | | | 3,000,000 | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | | 10 years | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum | | 10.00% | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date | | 110.00% | | | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | | 0 | | 0 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | | | 125,000 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | | 1,278,000 | | | | 1,278,000 | | 1,278,000 | | 1,278,000 | | 1,278,000 | | | | | | | | 1,278,000 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | | 775,000 | | | | 775,000 | | 775,000 | | 775,000 | | 775,000 | | | | | | | | 775,000 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period | | 0 | | 0 | | | | | | | | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | | 1,722,000 | | | | 1,722,000 | | 1,722,000 | | 1,722,000 | | 1,722,000 | | | | | | | | 1,722,000 | | |
Allocated Share-based Compensation Expense (in Dollars) | | ($67,000) | | $234,000 | | | | | | | | | | | | | | | | | | |
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[1] | Figures include the impact of 405,000 options that were granted in 2011 to replace options / warrants previously granted to certain engineering personnel. The previously issued options / warrants will expire as these newer options vest on a one-to-one basis. During 2013, 134,998 of these options vested, and 98,332 previously issued options and 36,666 previously issued warrants were cancelled concurrently in conjunction with the vesting of the 2011 options. Again during 2014, 135,004 of these options vested, and 98,336 previously issued options and 36,668 previously issued warrants were cancelled concurrently in conjunction with the vesting of the 2011 options. As of December 31, 2014, there are 0 options of the 2011 options remaining to vest. |
[2] | The weighted average remaining contractual term for warrants exercisable as of December 31, 2014 excludes 118,500 warrants with no expiration date. |
[3] | In 2011, a total of 110,000 stock options were granted to an engineer to replace warrants previously granted to that individual. The previously issued warrants will expire as these newer options vest on a one-to-one basis. During 2013, 36,666 previously issued warrants were cancelled concurrently in conjunction with the vesting of the 2011 options. Again during 2014, 36,668 previously issued warrants were cancelled concurrently in conjunction with the vesting of the 2011 options. As of December 31, 2014, there are 0 warrants remaining to be cancelled in conjunction with the replacement stock option granted in 2011. (See Note H [3]d.) |