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SHARE CAPITAL - Additional information (Details) |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended | 36 Months Ended
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Jan. 20, 2021 director | Oct. 01, 2020 USD ($) | Sep. 22, 2020 shares | Sep. 14, 2020 USD ($) shares | Aug. 11, 2020 USD ($) item $ / shares shares | Jul. 05, 2020 USD ($) item $ / shares shares | Jun. 07, 2020 USD ($) item $ / shares shares | Mar. 18, 2020 USD ($) $ / shares shares | Feb. 03, 2020 USD ($) item $ / shares shares | Jan. 20, 2020 USD ($) item $ / shares shares | Dec. 09, 2019 | Sep. 13, 2018 USD ($) item $ / shares shares | Dec. 07, 2016 shares | Sep. 30, 2019 USD ($) item $ / shares shares | Jun. 30, 2019 USD ($) item $ / shares shares | May 22, 2018 USD ($) shares | Dec. 31, 2020 USD ($) Vote $ / shares shares | Dec. 31, 2020 USD ($) Vote $ / shares shares | Dec. 31, 2018 USD ($) | Dec. 31, 2020 USD ($) Vote $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Number Of Voting Rights | Vote |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | 1 |  | 1
Reverse stock split ratio |  |  |  |  |  |  |  |  |  |  | 0.1 |  |  |  |  |  |  |  |  |
Shares of Common Stock remain available for grant under the plan | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,493,626 | 1,493,626 |  | 1,493,626
Unrecognized compensation cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,200,000 | $ 4,200,000 |  | $ 4,200,000
Unrecognized weighted average period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 1 month 6 days |  |
Proceeds from Stock Options Exercised |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0
Convertible notes conversions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,285,000 |
Converted instrument, shares issued | shares |  |  |  |  |  |  |  |  |  |  |  |  | 2,384,673 |  |  |  |  |  |  |
Proceeds from private placement |  |  |  |  |  |  |  | $ 41,300,000 |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2.36 | $ 2.36 |  | $ 2.36
Proceeds from Warrant Exercises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 472,000 |  |
Gross proceeds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,867,000 |  |
4.5% Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,423,000 |  |  |  |
Converted instrument, shares issued | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 261,363 |  |  |  |
Debt conversion converted instrument amount, cash |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,230,000 |  |  |  |
2006 Employee Stock Incentive Plan Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares authorized for issuance under share-based payment arrangement | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,725,171 | 5,725,171 |  | 5,725,171
Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  |  | 200,000 |  |  |  | 17,604,423 |  |  |  |  |  |  |  |  |  |  |  |
Share Price | $ / shares |  |  |  |  |  |  |  | $ 2.485 |  |  |  |  |  |  |  |  |  |  |  |
Purchase price (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 2.485 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from private placement |  |  |  |  |  |  |  | $ 43,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Number of shares per warrant issued | shares |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 2.36 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Warrant Exercises |  |  |  | $ 472,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ATM Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,428,571 | 1,428,571 |  |
Gross proceeds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,000,000 | $ 5,000,000.0 |  |
Sale of stock, maximum offering price |  | $ 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ATM Shares | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commission (as a percent) |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vice President [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  | $ 3.59 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | shares |  |  |  |  |  |  |  |  |  |  |  | 636,000 |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 5.10 |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |
Fair value at grant |  |  |  |  |  |  |  |  |  |  |  | $ 1,900,000 |  |  |  |  |  |  |  |
Dividend Yield |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |
Expected Volatility Rate |  |  |  |  |  |  |  |  |  |  |  | 64.30% |  |  |  |  |  |  |  |
Risk Free Interest Rate |  |  |  |  |  |  |  |  |  |  |  | 2.90% |  |  |  |  |  |  |  |
Expected Term |  |  |  |  |  |  |  |  |  |  |  | 6 years |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Officers And Certain Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | shares |  |  |  |  |  |  |  |  |  |  |  | 236,000 |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 5.10 |  |  |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  |  |  |  |  |  |  |  | 16 |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | shares |  |  |  |  |  |  |  |  |  |  |  | 400,000 |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  |  |  |  | $ 5.60 |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Sr. Vice President And Chief Development Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  | $ 3.59 |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  |  |  | 196,995 |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value at grant |  |  |  |  |  |  | $ 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend Yield |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Expected Volatility Rate |  |  |  |  |  |  | 80.43% |  |  |  |  |  |  |  |  |  |  |  |  |
Risk Free Interest Rate |  |  |  |  |  |  | 0.59% |  |  |  |  |  |  |  |  |  |  |  |  |
Expected Term |  |  |  |  |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Senior Vice President, Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  | $ 3.59 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  | 122,656 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value at grant |  |  |  |  | $ 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend Yield |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected Volatility Rate |  |  |  |  | 80.51% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk Free Interest Rate |  |  |  |  | 0.365% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected Term |  |  |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | New Vice President Research And Development [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  | $ 3.73 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  |  | 129,771 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value at grant |  |  |  |  |  | $ 329,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend Yield |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected Volatility Rate |  |  |  |  |  | 80.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk Free Interest Rate |  |  |  |  |  | 0.395% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected Term |  |  |  |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Chief Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4.69 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 160,000 |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16 |  |  |  |  |
Fair value at grant |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 449,000 |  |  |  |  |
Dividend Yield |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |
Expected Volatility Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 65.30% |  |  |  |  |
Risk Free Interest Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.80% |  |  |  |  |
Expected Term |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 years |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Chief Financial Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2.00 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 80,000 |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  |  |  |  |  |  |  |  |  |  | 16 |  |  |  |  |  |
Fair value at grant |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 97,000 |  |  |  |  |  |
Dividend Yield |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |
Expected Volatility Rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 66.48% |  |  |  |  |  |
Risk Free Interest Rate |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.695% |  |  |  |  |  |
Expected Term |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 years |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Certain Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  | $ 3.66 |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  |  |  | 760,311 |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value at grant |  |  |  |  |  |  | $ 1,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend Yield |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Expected Volatility Rate |  |  |  |  |  |  | 80.49% |  |  |  |  |  |  |  |  |  |  |  |  |
Risk Free Interest Rate |  |  |  |  |  |  | 0.45% |  |  |  |  |  |  |  |  |  |  |  |  |
Expected Term |  |  |  |  |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Chairman, Board of Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  | $ 3.70 |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  |  |  |  |  | 240,000 |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  |  |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |
Fair value at grant |  |  |  |  |  |  |  |  | $ 593,000 |  |  |  |  |  |  |  |  |  |  |
Dividend Yield |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |
Expected Volatility Rate |  |  |  |  |  |  |  |  | 76.91% |  |  |  |  |  |  |  |  |  |  |
Risk Free Interest Rate |  |  |  |  |  |  |  |  | 1.40% |  |  |  |  |  |  |  |  |  |  |
Expected Term |  |  |  |  |  |  |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Option [Member] | Director [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Directors | director | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares |  |  |  |  |  |  |  |  |  | $ 3.55 |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  |  |  |  |  |  | 200,000 |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  |  |  |  |  |  | 16 |  |  |  |  |  |  |  |  |  |
Fair value at grant |  |  |  |  |  |  |  |  |  | $ 475,000 |  |  |  |  |  |  |  |  |  |
Dividend Yield |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |
Expected Volatility Rate |  |  |  |  |  |  |  |  |  | 76.62% |  |  |  |  |  |  |  |  |  |
Risk Free Interest Rate |  |  |  |  |  |  |  |  |  | 1.685% |  |  |  |  |  |  |  |  |  |
Expected Term |  |  |  |  |  |  |  |  |  | 6 years |  |  |  |  |  |  |  |  |  |
Restricted Stock Units [Member] | Chief Financial Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate value of Restricted Stock Units that will be granted, contingent upon certain conditions |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000 |  |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |
Fair value at grant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,492,000 | $ 2,492,000 |  | $ 2,492,000
Restricted Stock [Member] | President and Chief Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  | 447,927 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value at grant |  |  |  |  | $ 1,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | Senior Vice President And Chief Financial Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares |  |  |  |  | 246,146 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares vested | shares |  |  | 27,855 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of non-vested shares | shares |  |  |  |  | 218,291 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of equal quarterly increments | item |  |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value at grant |  |  |  |  | $ 900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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