Consolidated Statements of Stockholder's Equity (Unaudited) - USD ($) $ in Thousands |
Total |
December 2019 Financing [Member] |
May 2021 Public Offering [Member] |
April 2020 Private Placement [Member] |
LPC [Member] |
Common stock [Member] |
Common stock [Member]
Series B Convertible Preferred Stock [Member]
|
Common stock [Member]
Convertible Preferred Stock [Member]
|
Common stock [Member]
May 2021 Public Offering [Member]
|
Common stock [Member]
April 2020 Private Placement [Member]
|
Preferred stock [Member] |
Preferred stock [Member]
Series B Convertible Preferred Stock [Member]
|
Additional paid-in capital [Member] |
Additional paid-in capital [Member]
Series B Convertible Preferred Stock [Member]
|
Additional paid-in capital [Member]
Convertible Preferred Stock [Member]
|
Additional paid-in capital [Member]
December 2019 Financing [Member]
|
Additional paid-in capital [Member]
May 2021 Public Offering [Member]
|
Additional paid-in capital [Member]
April 2020 Private Placement [Member]
|
Additional paid-in capital [Member]
LPC [Member]
|
Accumulated other comprehensive income (loss) [Member] |
Accumulated deficit [Member] |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Beginning Balance at Dec. 31, 2019 | $ 18,050 | $ 41 | $ 63,709 | $ 4 | $ (45,704) | ||||||||||||||||
Beginning Balance, Shares at Dec. 31, 2019 | 1,474,258 | 1,121 | |||||||||||||||||||
Stock-based compensation expense | 302 | 302 | |||||||||||||||||||
Costs relating to financing and purchase agreement | $ (34) | $ (13) | $ (34) | $ (13) | |||||||||||||||||
Shares issued on conversion of preferred shares | $ 2 | $ (2) | |||||||||||||||||||
Shares issued on conversion of preferred shares, Shares | 93,379 | (1,121) | |||||||||||||||||||
Net loss | (3,320) | (3,320) | |||||||||||||||||||
Ending Balance at Mar. 31, 2020 | 14,985 | $ 43 | 63,962 | 4 | (49,024) | ||||||||||||||||
Ending Balance, Shares at Mar. 31, 2020 | 1,567,637 | ||||||||||||||||||||
Beginning Balance at Dec. 31, 2019 | 18,050 | $ 41 | 63,709 | 4 | (45,704) | ||||||||||||||||
Beginning Balance, Shares at Dec. 31, 2019 | 1,474,258 | 1,121 | |||||||||||||||||||
Net loss | (6,242) | ||||||||||||||||||||
Ending Balance at Jun. 30, 2020 | 14,538 | $ 51 | 66,429 | 4 | (51,946) | ||||||||||||||||
Ending Balance, Shares at Jun. 30, 2020 | 1,937,703 | ||||||||||||||||||||
Beginning Balance at Mar. 31, 2020 | 14,985 | $ 43 | 63,962 | 4 | (49,024) | ||||||||||||||||
Beginning Balance, Shares at Mar. 31, 2020 | 1,567,637 | ||||||||||||||||||||
Stock-based compensation expense | 308 | 308 | |||||||||||||||||||
Costs relating to financing and purchase agreement | $ (1) | $ (1) | |||||||||||||||||||
Shares issued on conversion of preferred shares | $ 2 | $ (2) | |||||||||||||||||||
Shares issued on exercise of warrants | 589 | 589 | |||||||||||||||||||
Shares issued on exercise of warrants, Shares | 89,281 | ||||||||||||||||||||
Shares issued | $ 1,579 | $ 6 | $ 1,573 | ||||||||||||||||||
Shares issued, Shares | 280,782 | ||||||||||||||||||||
Adjustment of fractional shares on reverse stock split, Shares | 3 | ||||||||||||||||||||
Net loss | (2,922) | (2,922) | |||||||||||||||||||
Ending Balance at Jun. 30, 2020 | 14,538 | $ 51 | 66,429 | 4 | (51,946) | ||||||||||||||||
Ending Balance, Shares at Jun. 30, 2020 | 1,937,703 | ||||||||||||||||||||
Beginning Balance at Dec. 31, 2020 | 37,286 | $ 76 | 97,640 | 4 | (60,434) | ||||||||||||||||
Beginning Balance, Shares at Dec. 31, 2020 | 6,111,735 | ||||||||||||||||||||
Stock-based compensation expense | 542 | 542 | |||||||||||||||||||
Shares issued on exercise of warrants | 236 | 236 | |||||||||||||||||||
Shares issued on exercise of warrants, Shares | 35,217 | ||||||||||||||||||||
Shares issued | 23 | 23 | |||||||||||||||||||
Shares issued, Shares | 2,965 | ||||||||||||||||||||
Net loss | (7,999) | (7,999) | |||||||||||||||||||
Ending Balance at Mar. 31, 2021 | 30,088 | $ 76 | 98,441 | 4 | (68,433) | ||||||||||||||||
Ending Balance, Shares at Mar. 31, 2021 | 6,149,917 | ||||||||||||||||||||
Beginning Balance at Dec. 31, 2020 | 37,286 | $ 76 | 97,640 | 4 | (60,434) | ||||||||||||||||
Beginning Balance, Shares at Dec. 31, 2020 | 6,111,735 | ||||||||||||||||||||
Net loss | (19,310) | ||||||||||||||||||||
Ending Balance at Jun. 30, 2021 | 40,854 | $ 79 | 120,515 | 4 | (79,744) | ||||||||||||||||
Ending Balance, Shares at Jun. 30, 2021 | 9,452,223 | ||||||||||||||||||||
Beginning Balance at Mar. 31, 2021 | 30,088 | $ 76 | 98,441 | 4 | (68,433) | ||||||||||||||||
Beginning Balance, Shares at Mar. 31, 2021 | 6,149,917 | ||||||||||||||||||||
Stock-based compensation expense | 621 | 621 | |||||||||||||||||||
Shares issued on exercise of warrants | 95 | 95 | |||||||||||||||||||
Shares issued on exercise of warrants, Shares | 14,443 | ||||||||||||||||||||
Shares issued | 18 | $ 21,343 | $ 3 | 18 | $ 21,340 | ||||||||||||||||
Shares issued, Shares | 2,149 | 3,285,714 | |||||||||||||||||||
Net loss | (11,311) | (11,311) | |||||||||||||||||||
Ending Balance at Jun. 30, 2021 | $ 40,854 | $ 79 | $ 120,515 | $ 4 | $ (79,744) | ||||||||||||||||
Ending Balance, Shares at Jun. 30, 2021 | 9,452,223 |