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Equity Capital Structure and Equity Incentive Plan (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 21, 2020 | Nov. 20, 2020 | Oct. 13, 2020 | Oct. 08, 2020 | Nov. 19, 2018 | Mar. 30, 2018 | Feb. 02, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Common stock, shares authorized |  |  |  |  |  |  |  | 450,000,000 | 450,000,000 |  |
Series A Convertible Preferred Shares authorized |  |  |  |  |  |  |  | 50,000,000 | 50,000,000 |  |
Common stock, par value |  |  |  |  |  |  |  | $ 0.001 | $ 0.001 |  |
Preferred stock, par value |  |  |  |  |  |  |  | $ 0.001 | $ 0.001 |  |
Offering units |  |  | 200,000 |  |  |  |  |  |  |  |
Offering price |  |  | $ 25.00 |  |  |  |  |  |  |  |
Percentage of preferred shares |  |  | 7.75% |  |  |  |  |  |  |  |
Outstanding number of Warrants |  |  |  |  |  |  |  | 1,735,040 |  |  |
Gross proceeds from the Offering |  |  | $ 5,000 |  |  |  |  |  |  |  |
Net proceeds from the Offering |  |  | $ 4,300 |  |  |  |  |  |  |  |
Series A Convertible Preferred Shares - automatic conversion upon market trigger |  |  |  |  |  |  |  | If the trading price of Pyxis Tankers' common stock equals or exceeds $2.38 per share for at least 20 days in any 30 consecutive trading day period ending 5 days prior to notice, the Company can call for mandatory conversion of the Series A Convertible Preferred Shares. |  |  |
Change of control terms line item |  |  |  |  |  |  |  | In the case of a change of control that is pre-approved by the Company's Board of Directors, holders of Series A Convertible Preferred Shares have the option to (i) demand that the Company redeem the Series A Convertible Preferred Shares at (a) $26.63 per Series A Convertible Preferred Share from the date of issuance until October 13, 2021, (b) $25.81 per Series A Convertible Preferred Share from October 13, 2021 until October 13, 2022 and (c) $25.00 after October 13, 2022, or (ii) continue to hold the Series A Convertible Preferred Shares. Upon a change of control, the holders also have the option to convert some or all of the Series A Convertible Preferred Shares, together with any accrued or unpaid dividends, into shares of common stock at the conversion rate. Change of Control means that (i) Mr. Valentios Valentis and his affiliates cease to own at least 20% of the voting securities of the Company, or (ii) a person or group acquires at least 50% voting control of the Company, and in the case of each of either (i) or (ii), neither the Company nor any surviving entity has its common stock listed on a recognized U.S. exchange. |  |  |
Common stock, shares outstanding |  |  |  |  |  |  |  | 21,962,881 | 21,370,280 |  |
Common stock, shares issued |  |  |  |  |  |  |  | 21,962,881 | 21,370,280 |  |
Overallotment Option [Member] |  |  |  |  |  |  |  |  |  |  |
Additional number of Series A Convertible Preferred Shares (optional preferred shares) |  |  | up to 30,000 |  |  |  |  |  |  |  |
Purchase price per optional preferred share |  |  | $ 23.051 |  |  |  |  |  |  |  |
Additional number of warrants (optional warrants) |  |  | 240,000 |  |  |  |  |  |  |  |
Purchase price per optional warrant |  |  | $ 0.00925 |  |  |  |  |  |  |  |
Partial overallotment of warrants exercised by the underwriter |  |  | 135,040 |  |  |  |  |  |  |  |
Gross proceeds |  |  | $ 1 |  |  |  |  |  |  |  |
Underwriter's Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Warrant aggregate purchase price |  |  |  | 100 |  |  |  |  |  |  |
Termination date |  |  |  | at any time on or after April 6, 2021 and prior to October 8, 2025 |  |  |  |  |  |  |
First type - Warrant for the purchase of an aggregate Series A Convertible Preferred Shares |  |  |  | 2,000 |  |  |  |  |  |  |
First type - Exercise price |  |  |  | $ 24.92 |  |  |  |  |  |  |
Second type - Warrant for the purchase of an aggregate Series A Convertible Preferred Shares |  |  |  | 16,000 |  |  |  |  |  |  |
Second type - Exercise price |  |  |  | $ 0.01 |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Conversion of Series A convertible preferred shares to common stock, shares |  |  |  |  |  |  |  | 332,106 |  |  |
Issuance of common stock under the promissory note, shares |  |  |  |  |  |  |  | 260,495 | 95,262 |  |
F-3 Registration Statement [Member] |  |  |  |  |  |  |  |  |  |  |
Maximum offering amount under registration statement |  |  |  |  |  |  | $ 100,000 |  |  |  |
Maximum number of shares for sale under registration statement |  |  |  |  |  |  | 5,233,222 |  |  |  |
Prospectus Supplement Filed for Shelf Registration Statement Related to ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Maximum offering amount under registration statement |  |  |  |  |  | $ 2,300 |  |  |  |  |
Prospectus Supplement Amended for Shelf Registration Statement Related to ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Maximum offering amount under registration statement |  |  |  |  | $ 3,675 |  |  |  |  |  |
ATM Program [Member] |  |  |  |  |  |  |  |  |  |  |
Number of common stock offered and sold under the atm |  |  |  |  |  |  |  |  | 214,828 | 182,297 |
Common stock, shares outstanding |  |  |  |  |  |  |  |  |  | 21,060,190 | 20,877,893
Gross proceeds under the atm |  |  |  |  |  |  |  |  | $ 354 |  |
Series A Convertible Preferred Shares [Member] |  |  |  |  |  |  |  |  |  |  |
Series A Convertible Preferred Shares authorized |  |  |  |  |  |  |  | 1,000,000 |  |  |
Series A Convertible Preferred Shares issued |  |  |  |  |  |  |  | 181,475 | 0 |  |
Series A Convertible Preferred Shares outstanding |  |  |  |  |  |  |  | 181,475 | 0 |  |
Initial conversion price per common share |  |  |  |  |  |  |  | $ 1.40 |  |  |
Series A Convertible Preferred Share, description |  |  |  |  |  |  |  | Each Series A Convertible Preferred Share is convertible into common shares at an initial conversion price of $1.40 per common share, or 17.86 common shares, at any time at the option of the holder, subject to certain customary adjustments. |  |  |
Conversion of Series A convertible preferred shares to common stock, shares |  |  |  |  |  |  |  | 18,525 |  |  |
Series A Convertible Preferred Shares and detachable Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Number of detachable Warrants per Series A Convertible Preferred Share |  |  | 8 |  |  |  |  |  |  |  |
Number of common shares from the exercise of detachable warrants |  |  | up to 1,600,000 |  |  |  |  |  |  |  |
Warrant exercise price |  |  | $ 1.40 |  |  |  |  |  |  |  |
Warrant exercisable date |  |  | at any time prior to October 13, 2025 or, in case of absence of an effective registration statement, to exchange those cashless based on a formula. |  |  |  |  |  |  |  |
Cash dividend per share | $ 0.1615 | $ 0.1991 |  |  |  |  |  |  |  |  |
Annual cash dividend per share |  |  | $ 1.9375 |  |  |  |  |  |  |  |
Preferred dividend percentage | 7.75% | 7.75% | 7.75% |  |  |  |  |  |  |  |

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