Note 10 - Stockholders' Equity (Details Textual) | 1 Months Ended | 2 Months Ended | 3 Months Ended | 4 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | 13 Months Ended | 19 Months Ended | 24 Months Ended | 29 Months Ended | | | | |
Aug. 31, 2021 shares | Apr. 30, 2021 shares | Feb. 28, 2021 USD ($) $ / shares shares | Aug. 31, 2020 shares | Mar. 31, 2020 USD ($) $ / shares shares | Jan. 31, 2020 USD ($) $ / shares shares | Aug. 31, 2019 USD ($) $ / shares shares | Jul. 31, 2019 USD ($) $ / shares shares | Jun. 30, 2019 USD ($) $ / shares shares | Apr. 30, 2019 USD ($) shares | Mar. 31, 2019 USD ($) $ / shares shares | Feb. 28, 2019 USD ($) $ / shares shares | Jan. 31, 2019 USD ($) $ / shares shares | Oct. 31, 2018 USD ($) $ / shares shares | Jul. 31, 2018 USD ($) shares | Apr. 30, 2018 USD ($) shares | Mar. 31, 2018 USD ($) $ / shares shares | Aug. 31, 2017 $ / shares shares | Mar. 31, 2021 USD ($) shares | Dec. 31, 2020 USD ($) $ / shares shares | Sep. 30, 2020 USD ($) $ / shares shares | Mar. 31, 2020 USD ($) $ / shares shares | Sep. 30, 2019 USD ($) | Oct. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) $ / shares shares | Jun. 15, 2022 USD ($) $ / shares | Dec. 31, 2020 $ / shares shares | Jul. 31, 2019 USD ($) $ / shares shares | Sep. 30, 2020 USD ($) $ / shares shares | Sep. 30, 2019 USD ($) $ / shares | Dec. 31, 2021 USD ($) | Dec. 31, 2019 USD ($) $ / shares shares | Dec. 31, 2018 $ / shares shares | Sep. 30, 2020 USD ($) $ / shares shares | Sep. 30, 2020 USD ($) $ / shares shares | Dec. 31, 2021 $ / shares | Sep. 30, 2020 USD ($) $ / shares shares | Jan. 31, 2021 | Jan. 01, 2019 USD ($) | May 31, 2018 USD ($) | Sep. 30, 2014 $ / shares shares |
Common Stock, Shares Authorized (in shares) | | | | | | | | | | | | | | | | | | | | | 50,000,000 | | | | 50,000,000 | | | | 50,000,000 | | | 50,000,000 | | 50,000,000 | 50,000,000 | | 50,000,000 | | | | |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | $ 0.001 | | | | $ 0.001 | | | | $ 0.001 | | | $ 0.001 | | $ 0.001 | $ 0.001 | | $ 0.001 | | | | |
Preferred Stock, Shares Authorized (in shares) | | | | | | | | | | | | | | | | | | | | | 5,000,000 | | | | 5,000,000 | | | | 5,000,000 | | | 5,000,000 | | 5,000,000 | 5,000,000 | | 5,000,000 | | | | |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | $ 0.001 | | | | $ 0.001 | | | | $ 0.001 | | | $ 0.001 | | $ 0.001 | $ 0.001 | | $ 0.001 | | | | |
Sale of Stock, Maximum Sale Amount Allowed | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 75,000,000 | |
Sale of Stock, Minimum Market Value of Voting Securities Held by Non-affiliates | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 75,000,000 | |
Proceeds from Issuance of Preferred Stock and Preference Stock | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 233,000 | $ 7,323,000 | | | | | | | | | | | |
Common Stock, Shares, Outstanding, Ending Balance (in shares) | | | | | | | | | | | | | | | | | | | | | 32,236,994 | | | | 30,274,601 | | | | 32,236,994 | | | 30,274,601 | | 32,236,994 | 32,236,994 | | 32,236,994 | | | | |
Number of Vote Each Shareholder Owns | | | | | | | | | | | | | | | | | | | | | 1 | | | | | | | | 1 | | | | | 1 | 1 | | 1 | | | | |
Proceeds from Issuance of Common Stock | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 0 | 102,000 | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | | | | | | | | | 5,266,187 | | | | 6,238,182 | | | | 5,266,187 | | | 6,238,182 | | 5,266,187 | 5,266,187 | | 5,266,187 | | | | |
Payments of Commissions | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 0 | | | | | | |
Stock Issued During Period, Value, New Issues | $ | | | | | | | | | | | | | | | | | | | | | | | $ 7,323,000 | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Outstanding (in shares) | | | | | | | | | | | | | | | | | | | | | 5,266,187 | | | | 6,238,182 | | | | 5,266,187 | | | 6,238,182 | | 5,266,187 | 5,266,187 | | 5,266,187 | | | | |
Dividends Payable | $ | | | | | | | | | | | | | | | | | | | | | $ 120,000 | | 83,000 | | | | | | $ 120,000 | 83,000 | | | | $ 120,000 | $ 120,000 | | $ 120,000 | | | | |
Class of Warrant or Right, Issued During Period (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 250,000 | | | | | | | | | | | | |
Payments of Dividends, Total | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 1,108,000 | 46,000 | | | | | | | | | | | |
Stock Issued During Period, Value, Issued for Services | $ | | | | | | | | | | | | | | | | | | | | | | | 478,000 | | | | | | | 1,466,000 | | | | | | | | | | | |
Class of Warrant or Right, Exercisable, Outstanding (in shares) | | | | | | | | | | | | | | | | | | | | | 5,208,374 | | | | | | | | 5,208,374 | | | | | 5,208,374 | 5,208,374 | | 5,208,374 | | | | |
Class of Warrant or Right, Weighted Average Remaining Contractual Term (Year) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1 year 6 months | | | | | | | | | | | | |
Class of Warrant or Right, Outstanding, Intrinsic Value | $ | | | | | | | | | | | | | | | | | | | | | $ 0 | | | | $ 95,000 | | | | $ 0 | | | $ 95,000 | | $ 0 | $ 0 | | $ 0 | | | | |
Gain (Loss) on Modification of Warrants | $ | | | | | | | | | | | | | | | | | | | | | 0 | | $ (876,000) | | | | | | $ 0 | $ (876,000) | | | | | | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 4.18 | | | | | | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 0 | | | | | | | | | | | | |
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ | | | | | | | | | | | | | | | | | | | | | 746,000 | | | | | | | | $ 746,000 | | | | | 746,000 | 746,000 | | 746,000 | | | | |
Share Price (in dollars per share) | $ / shares | | | | | | | $ 4.55 | | | | | | | | | | | $ 4.53 | | | | | | | | | | | | | | | $ 5.72 | | | | | | | | |
Share-Based Payment Arrangement, Option [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1 year 2 months 12 days | | | | | | | | | | | | |
Restricted Stock Units (RSUs) [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares) | | | | 39,750 | | | | | | | | | | | | | | | | | | | | | | | | | 12,501 | | | 5,556 | | | | | | | | | |
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares) | | | | 9,632 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Restricted Stock Units (RSUs) [Member] | Consultants [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) | | | | | | | 50,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | | | | | 3 years | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Restricted Stock Units (RSUs) [Member] | Employee and Consultant [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2 years 10 months 24 days | | | | | | | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) | | | | | | | | | | | | | | | | | | 500,000 | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ | | | | | | | | | | | | | | | | | | | | | $ 1,028,000 | | | | | | | | $ 1,028,000 | | | | | $ 1,028,000 | $ 1,028,000 | | $ 1,028,000 | | | | |
Restricted Stock Units (RSUs) [Member] | Employee and Consultant [Member] | Share-Based Payment Arrangement, Tranche One [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | | | | | | | | | | | | | | | | | | 10% | | | | | | | | | | | | | | | | | | | | | | | |
Restricted Stock Units (RSUs) [Member] | Employee and Consultant [Member] | Share-Based Payment Arrangement, Tranche Two [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | | | | | | | | | | | | | | | | | | 15% | | | | | | | | | | | | | | | | | | | | | | | |
Restricted Stock Units (RSUs) [Member] | Employee and Consultant [Member] | Share-Based Payment Arrangement, Tranche Three [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | | | | | | | | | | | | | | | | | | 50% | | | | | | | | | | | | | | | | | | | | | | | |
Restricted Stock Units (RSUs) [Member] | Employee and Consultant [Member] | Share-Based Payment Arrangement, Tranche Four [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | | | | | | | | | | | | | | | | | | 25% | | | | | | | | | | | | | | | | | | | | | | | |
Mr. Daniel Mangless [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ | | | | | $ 1,000,000 | | | | | | | | | | | | | | | | | $ 1,000,000 | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | 50,000 | | | | 250,000 | | | 250,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | | | | | | | | | $ 5.50 | | | $ 7 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | | 3 years | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | 250,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | $ 7 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Issuance or Sale of Equity, Total | $ | | | | | | | | | $ 1,375,000 | | | $ 1,750,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Ivan Gandrud Chevrolet, Inc [Member] | Mr. Daniel Mangless [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Ownership Percentage | | | | | | | | | | | | | | | | | | | | | 100% | | | | | | | | 100% | | | | | 100% | 100% | | 100% | | | | |
Capital Market Solutions, LLC [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | | | 4 years | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | 925,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | $ 6 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Issued for Services (in shares) | | | | | | | | | | | | | 75,000 | | 100,000 | | | | | | | | | | | | | | 100,000 | | | | | | | | | | | | |
Base Fee | $ | | | | | | | | | | | | | $ 525,000 | | $ 300,000 | | | | | | | | | | | | | | | $ 100,000 | | | | | | | | | | | |
Payment of Base Fee for Services | $ | | | | | | | | | | | | | | | 50,000 | | | | | | | | | | | | | | $ 125,000 | | | | | | | | | | | | |
Base Fee, Monthly Payment | $ | | | | | | | | | | | | | | | $ 25,000 | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, Issued for Services | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1,226,000 | | | | | | | | | | | | |
Class of Warrant or Right, Vesting Rights, Percentage | | | | | | 25% | | | | | | | 50% | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Amortization of Stock Issuance Costs | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 386,000 | 386,000 | | | | | | | | | | | |
Amortization of Equity Issuance Expense Related to Vested Warrants | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 280,000 | 2,197,000 | | | | | | | | | | | |
Corinthian Partners, LLC [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | 600 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, New Issues | $ | | | | | | | $ 3,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued, Percentage of Shares Issued in Total | | | | | | | 10% | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Greentree Financial Group, Inc [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Issued for Services (in shares) | | | | | | | | | | | | | | | | | 75,000 | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, Issued for Services | $ | | | | | | | | | | | | | | | | | $ 311,000 | | | | | | | | | | | | | | | | | | | | | | | | |
Amortization of Stock Issuance Costs | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 134,000 | | | | | | | | | | | |
I-Bankers [member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Issued for Services (in shares) | | | | | | | | | | 100,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, Issued for Services | $ | | | | | | | | | | $ 571,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Amortization of Stock Issuance Costs | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 143,000 | 286,000 | | | | | | | | | | | |
Ignition [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | 3 years | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | 100,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | $ 10 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding | $ | | | | | | | | | | | $ 414,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, New Issues | $ | | | | | | | | | | | $ 384,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Issued for Services (in shares) | | | | | | | | | | | 55,000 | | | | | 50,000 | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, Issued for Services | $ | | | | | | | | | | | | | | | | $ 208,000 | | | | | | | | | | | | | | | | | | | | | | | | | |
Amortization of Stock Issuance Costs | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 89,000 | | | | | | | | | | | |
Stock Issued During Period, Shares, Equity Transactions (in shares) | | | | | | | | | | | 5,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Ivan Gandrud Chevrolet, Inc [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | 5 years | | | | | | | | | | | | | | | | | 5 years | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | 250,000 | | | | | | | | | | | | | | | | | 250,000 | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | $ 4.75 | | | | | | | | | | | | | | | | | $ 4.75 | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding | $ | | | | | $ 167,000 | | | | | | | | | | | | | | | | | $ 167,000 | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Issued for Services (in shares) | | | | | 125,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, Issued for Services | $ | | | | | $ 158,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Amortization of Stock Issuance Costs | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 325,000 | | | | | | | | | | | | |
Benchmark Company [member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Issued for Services (in shares) | | | | | | | 20,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, Issued for Services | $ | | | | | | | $ 91,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Minimum [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | $ 4.60 | | | | | | | | $ 4.60 | | | | | $ 4.60 | $ 4.60 | | $ 4.60 | | | | |
Maximum [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | $ 10 | | | | | | | | $ 10 | | | | | $ 10 | $ 10 | | $ 10 | | | | |
Conversion of Series B Preferred Stock into Common Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Conversion of Stock, Shares Converted (in shares) | | | | | | | | | | | | | | | | | | | | | | 129,332 | | | | | | | | | | 105 | | | | | | | | | |
Conversion of Stock, Shares Issued (in shares) | | | | | | | | | | | | | | | | | | | | | | 258,664 | | | | | | | | | | 210 | | | | | | | | | |
Conversion of 2014 Convertible Note into Common Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Conversion, Original Debt, Amount | $ | | | | | | | | | | | | | | $ 4,000,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Conversion, Converted Instrument, Shares Issued (in shares) | | | | | | | | | | | | | | 747,664 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares | | | | | | | | | | | | | | $ 5.35 | | | | | | | | | | $ 5.35 | | | | | | | | | | | | | | | | | |
Warrants in Connection With Securities Purchase Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | | 3 years | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | 250,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | $ 7 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Purchase Agreements Warrants for Consulting Fees [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | | 3 years | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | 100,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | $ 10 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding | $ | | | | | | | | | | | | $ 324,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants in Connection With Promissory Notes 2019 [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | 5 years | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | 40,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | $ 6 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding | $ | | | | | | | | | | | $ 138,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights for Each $1,000,000 Invested (in shares) | | | | | | | | | | | 20,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants to Debt Exchange Dealer [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Outstanding (in shares) | | | | | | | | | | | | | | | | | | | | | 150,000 | | | | 150,000 | | | | 150,000 | | | 150,000 | | 150,000 | 150,000 | | 150,000 | | | | |
Warrants in Connection With 2018 Private Placement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | | | | 3 years | | | | | | | | | | 3 years | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | | 630,526 | | | | | | | 448,420 | | | 630,526 | | | | | 448,420 | | | | | 448,420 | 448,420 | | 448,420 | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | $ 4.75 | | | | | | | | | | $ 4.75 | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding | $ | | | | | | | | | | | | | | $ 1,689,000 | | | | | | | | | | $ 1,689,000 | | | | | | | | | | | | | | | | | |
Warrants in Connection With 2018 Private Placement [Member] | Reclassified From Derivative Liability to Equity [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 1,494,000 | | |
Warrants With 2014 Convertible Note [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | | | | 4 years | | | | | | | | | | 4 years | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | | 631,579 | | | | | | | 631,579 | | | 631,579 | 631,579 | | | | 631,579 | | | 631,579 | | 631,579 | 631,579 | | 631,579 | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | $ 4.75 | | | | | | | | | | $ 4.75 | | | | | | | | | | | | | | | | | |
Warrants With 2014 Convertible Note [Member] | Mr. Grover [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | 782,608 | 782,608 | | | | | | | | | | | | | | | | | | | 782,608 | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | $ 4.60 | | | | | | | | | | | | | | | | | | | | $ 4.60 | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Warrants Exercised (in shares) | | | | | | | | 600,242 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Warrant Exercises | $ | | | | | | | | $ 2,761,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, for Inducement Shares (in shares) | | | | | | | | 50,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants to Debt Exchange Dealer One [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | | | | 4 years | | | | | | | | | | 4 years | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | | 80,000 | | | | | | | | | | 80,000 | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | $ 5.35 | | | | | | | | | | $ 5.35 | | | | | | | | | | | | | | | | | |
Warrants to Debt Exchange Dealer Two [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | | | | | | | | | | | | 4 years | | | | | | | | | | 4 years | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | | 70,000 | | | | | | | | | | 70,000 | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | $ 4.75 | | | | | | | | | | $ 4.75 | | | | | | | | | | | | | | | | | |
Warrants With Series B Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding | $ | | | | | | | | | | | | | | | | | $ 75,000 | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Outstanding (in shares) | | | | | | | | | | | | | | | | | | | | | 6,098 | | | | 6,098 | | | | 6,098 | | | 6,098 | | 6,098 | 6,098 | | 6,098 | | | | |
Class of Warrant or Right, Issued During Period (in shares) | | | | | | | | | | | | | | | | | 38,117 | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercisable, Exercise Price (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | $ 5.70 | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants With Series C Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Warrants Exercised (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 99,143 | | | | | | | | | |
Class of Warrant or Right, Issued During Period (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 116,867 | | | | | | | | |
Class of Warrant or Right, Exercisable, Exercise Price (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 4.75 | | | | | | | | |
Warrants With 2014 Private Placement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 929,346 |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 4.60 |
Warrants With 2014 Private Placement [Member] | One July 2014 Investor [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Warrants Exercised (in shares) | | | | | | | | 19,565 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, for Inducement Shares (in shares) | | | | | | | | 2,500 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants With 2014 Private Placement [Member] | One August 2014 Investor [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Warrants Exercised (in shares) | | | | | | | 48,913 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Warrant Exercises | $ | | | | | | | $ 228,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, for Inducement Shares (in shares) | | | | | | | 5,750 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Placement Agent Warrants One [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 44,107 |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 7 |
Placement Agent Warrants Two [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 60,407 |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 4.60 |
Preferred Warrants [Member] | One Investor From Series C Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | 63,156 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | $ 4.75 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Warrants Exercised (in shares) | | | | | | | 63,156 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Warrant Exercises | $ | | | | | | | $ 300,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, for Inducement Shares (in shares) | | | | | | | 6,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Forecast [Member] | Restricted Stock Units (RSUs) [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares) | 54,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares) | 12,575 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Forecast [Member] | Mr. Daniel Mangless [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Common Stock, Shares, Outstanding, Ending Balance (in shares) | | | 176,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | 1,000,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Forecast [Member] | Capital Market Solutions, LLC [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Vesting Rights, Percentage | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 25% | | | |
Forecast [Member] | Warrants in Connection With Promissory Notes 2019 [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Warrants and Rights Outstanding, Term (Year) | | | 2 years | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | 150,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | $ 1 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Forecast [Member] | Warrants With 2014 Convertible Note [Member] | Mr. Grover [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | | | | | | | | | | | | | | | | | | | | 182,366 | | | | | | | 182,366 | | | | | | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | $ 4.75 | | | | | | | $ 4.75 | | | | | | | | | | | | | | |
March 2020 Private Placement Debt Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | 250,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares Received Per Standard Amounts Invested (in shares) | | | | | 50,000 | | | | | | | | | | | | | | | | | 50,000 | | | | | | | | | | | | | | | | | | | |
Senior Secured Promissory Note With Securities Purchase Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | 50,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Senior Secured Promissory Note With Securities Purchase Agreement [Member] | Forecast [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | 1,000,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Securities Purchase Agreement With Daniel Mangless [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | 250,000 | | | 250,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | | | | | | | | | $ 5.50 | | | $ 7 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issuance Fees | $ | | | | | | | | | $ 0 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Issuance of Common Stock | $ | | | | | | | | | $ 1,375,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Issuance or Sale of Equity, Total | $ | | | | | | | | | | | | $ 1,750,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Purchase Agreement Shares Issued for Consulting Fees [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | 5,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | | | | | | | | | | | | $ 7 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares in Connection With Promissory Notes 2019 [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | 40,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of Stocks Issued for Each $1,000,000 Invested (in shares) | | | | | | | | | | | 20,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Value, New Issues | $ | | | | | | | | | | | $ 212,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares in Connection With Promissory Notes 2019 [Member] | Forecast [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | 400,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
The 2019 Private Placement Debt Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | 61,800 | | | | | | | | | | | | | |
Number of Shares Received for Every $100,000 Invested (in shares) | | | | | | | | 2,000 | | | | | | | | | | | | | | | | | | | | 2,000 | | | | | | | | | | | | | |
Stock Issued to Placement Agent [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | 15,450 | | | | | | | | | | | | | |
Stock Issued to Placement Agent [Member] | Forecast [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | | | | | | | | 366,000 | | | | | | | | | | | | | | | | | | | | | | |
At-the-market Equity Offering Program [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | | 17,524 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Issuance of Common Stock | $ | | | | | | | | | | | | | $ 102,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Maximum Shares Allowed to Sell Through Sales Agent (in shares) | | | | | | | | | | | | | 60,000,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Commissions, Percent of Gross Sales Proceeds | | | | | | | | | | | | | 3% | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Private Placement 2018 [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | | | | | | | | | | | | | 630,526 | | | | | | | | | | | | | | | | | |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | | | | | | | | | | | | | | $ 4.75 | | | | | | | | | | $ 4.75 | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, Warrants Exercised (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 182,106 | | | | | | | | | |
Stock Issued for Advisory Fees [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | | | | | | | | | | | | | 150,000 | | | | | | | | | | | | | | | | | |
Stock Issued to Debt Exchange Dealer [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | | | 30,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | |
March 2020 Private Placement Debt Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ | | | | | $ 5,000,000 | | | | | | | | | | | | | | | | | $ 5,000,000 | | | | | | | | | | | | | | | | | | | |
Senior Secured Promissory Note With Securities Purchase Agreement [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Issuance of Long-Term Debt, Total | $ | | | | | $ 1,000,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Promissory Notes 2019 [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ | | | | | | | | | | | 2,000,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Issuance of Long-Term Debt, Total | $ | | | | | | | | | | | 2,000,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument, Unamortized Discount, Total | $ | | | | | | | | | | | $ 139,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Long-Term Debt, Total | $ | | | | | | | | | | | | | | | | | | | | | $ 2,000,000 | | | | $ 2,000,000 | | | | $ 2,000,000 | | | $ 2,000,000 | | $ 2,000,000 | $ 2,000,000 | | $ 2,000,000 | | | | |
Promissory Notes 2019 [Member] | Forecast [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ | | | $ 2,000,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
The 2019 Private Placement Debt Offering [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ | | | | | | | | $ 10,000,000 | | | | | | | | | | | | | | | | | | | | $ 10,000,000 | | | | | | | | | | | | | |
Debt Instrument, Unamortized Discount, Total | $ | | | | | | | | 451,000 | | | | | | | | | | | | | | | | | | | | 451,000 | | | | | | | | | | | | | |
PIPE Notes 2019 Amendment [Member] | Forecast [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument, Face Amount | $ | | | | | | | | | | | | | | | | | | | $ 2,440,000 | | | | | | | | | | | | | | | | | | | | | | |
Private Placement 2014 [Member] | One July 2014 Investor [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of Notes Payable | $ | | | | | | | | 100,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Long-Term Debt, Total | $ | | | | | | | | $ 11,000 | | | | | | | | | | | | | | | | | | | | $ 11,000 | | | | | | | | | | | | | |
Series A Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Authorized (in shares) | | | | | | | | | | | | | | | | | | | | | 161,135 | | | | | | | | 161,135 | | | | | 161,135 | 161,135 | | 161,135 | | | | |
Preferred Stock, Dividend Rate, Percentage | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 8% | | | 8% | | | | | | | | | |
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | | | | | | | | | | | | | | | | | | | | | 161,135 | | | | 161,135 | | | | 161,135 | | | 161,135 | | 161,135 | 161,135 | | 161,135 | | | | |
Dividends Payable | $ | | | | | | | | | | | | | | | | | | | | | $ 160,000 | | | | $ 150,000 | | | | $ 160,000 | | | $ 150,000 | | $ 160,000 | $ 160,000 | | $ 160,000 | | | | |
Preferred Stock, Convertible, Conversion Ratio | | | | | | | | | | | | | | | | | | | | | 0.1 | | | | | | | | 0.1 | | | | | 0.1 | 0.1 | | 0.1 | | | | |
Series B Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Authorized (in shares) | | | | | | | | | | | | | | | | | | | | | 1,052,631 | | | | | | | | 1,052,631 | | | | | 1,052,631 | 1,052,631 | | 1,052,631 | | | | |
Preferred Stock, Dividend Rate, Percentage | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 5% | | | 5% | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | | | | | | 381,173 | | | | | | | | | | | | | | | | | | | | | | | | |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | $ 9.50 | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | | | | | | | | | | | | | | | | | | | | | 0 | | | | 129,332 | | | | 0 | | | 129,332 | | 0 | 0 | | 0 | | | | |
Dividends Payable | $ | | | | | | | | | | | | | | | | | | | | | | | | | $ 15,000 | | | | | | | $ 15,000 | | | | | | | | | |
Preferred Stock, Convertible, Conversion Ratio | | | | | 2 | | | | | | | | | | | | 2 | | | | | 2 | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | $ 4.75 | | | | | | | | | | | | | | | | | | | | | | | | |
Payments of Dividends, Total | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 32,000 | $ 46,000 | | | | | | | | | | | |
Series C Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Authorized (in shares) | | | | | | | | | | | | | | | | | | | | | 700,000 | | | | | | | | 700,000 | | | | | 700,000 | 700,000 | | 700,000 | | | | |
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | 0 | | | | | | | 0 | | | | | | | | | |
Series D Cumulative Redeemable Perpetual Preferred Stock [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Authorized (in shares) | | | | | | | | | | | | | | | | | | | | | 650,000 | | | | | | | | 650,000 | | | | | 650,000 | 650,000 | | 650,000 | | | | |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | $ 0.001 | | | | | | | | $ 0.001 | | | | | $ 0.001 | $ 0.001 | | $ 0.001 | | | | |
Preferred Stock, Dividend Rate, Percentage | | | | | | | | | | | | | | | | | | | | | | | | | 9.75% | | | | 9.75% | | | 9.75% | | | | | | | | | |
Proceeds from Issuance of Preferred Stock and Preference Stock | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 12,269,000 | | | $ 12,371,000 | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | 578,898 | | | | | | | | | | | | | | | | |
Preferred Stock, Shares Outstanding, Ending Balance (in shares) | | | | | | | | | | | | | | | | | | | | | 590,273 | | | | 578,898 | | | | 590,273 | | | 578,898 | | 590,273 | 590,273 | | 590,273 | | | | |
Dividends Payable | $ | | | | | | | | | | | | | | | | | | | | | $ 120,000 | | | | $ 118,000 | | | | $ 120,000 | | | $ 118,000 | | $ 120,000 | $ 120,000 | | $ 120,000 | | | | |
Payments of Dividends, Total | $ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 1,076,000 | | | | | | | | | | | | |
Preferred Stock, Additional Shares Available for Issuance (in shares) | | | | | | | | | | | | | | | | | | | | | 59,727 | | | | | | | | 59,727 | | | | | 59,727 | 59,727 | | 59,727 | | | | |
Preferred Stock, Dividends Per Share, Declared (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ 2.4375 | | | | | | | | | | | | |
Preferred Stock, Monthly Dividends Per Share, Declared (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 0.203125 | | | | | | | | | | | | |
Preferred Stock, Liquidation Preference Per Share (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | $ 25 | | | | | | | | 25 | | | | | $ 25 | $ 25 | | $ 25 | | | | |
Preferred Stock, Redemption Price Per Share (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | $ 25 | | | | | | | | $ 25 | | | | | $ 25 | $ 25 | | $ 25 | | | | |
Series D Cumulative Redeemable Perpetual Preferred Stock [Member] | Weighted Average [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | $ 24.05 | | | | | | | $ 24.05 | | | | | | | | | |
Series D Cumulative Redeemable Perpetual Preferred Stock [Member] | Forecast [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Preferred Stock, Dividend Rate, Percentage | | | | | | | | | | | | | | | | | | | | | | | | | | | 9.75% | | | | 9.75% | | | | | | | | | | |
Payments of Dividends, Total | $ | | | | | | | | | | | | | | | | | | | | $ 360,000 | | | | | | $ 719,000 | | | | | $ 1,440,000 | | | | | | | | | | |
Preferred Stock, Dividends Per Share, Declared (in dollars per share) | $ / shares | | | | | | | | | | | | | | | | | | | | | | | | | | $ 0.203125 | $ 0.203125 | | | | | | | | | $ 0.203125 | | | | | |
Series D Cumulative Redeemable Perpetual Preferred Stock [Member] | Over-Allotment Option [Member] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Proceeds from Issuance of Preferred Stock and Preference Stock | $ | | | | | | $ 259,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | | | | | | 11,375 | | | | | | | | | | | | | | | | | | | 43,500 | | | | | | | | | | | | | | | | |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | | | | | | $ 22.75 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Number of Overallotment Shares Avaiable for Purchase (in shares) | | | | | | | | | | | | | | | | | | | | | | | | | 36,809 | | | | | | | 36,809 | | | | | | | | | |