CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) | Total | Common Stock | Additional Paid-In Capital | Retained Earnings (Accumulated Deficit) |
Balance, shares at Dec. 31, 2019 | | 1,725,000 | | |
Balance, amount at Dec. 31, 2019 | $ 11,083,000 | $ 16,000 | $ 16,039,000 | $ (4,972,000) |
Value of stock-based compensation, Shares | | 0 | | |
Value of stock-based compensation | 49,000 | $ 0 | 49,000 | 0 |
Issuance of common stock, net, shares | | 5,000 | | |
Issuance of common stock, net, amount | 20,000 | $ 0 | 20,000 | 0 |
Net loss | (925,000) | $ 0 | 0 | (925,000) |
Balance, shares at Mar. 31, 2020 | | 1,730,000 | | |
Balance, amount at Mar. 31, 2020 | 10,227,000 | $ 16,000 | 16,108,000 | (5,897,000) |
Balance, shares at Dec. 31, 2019 | | 1,725,000 | | |
Balance, amount at Dec. 31, 2019 | 11,083,000 | $ 16,000 | 16,039,000 | (4,972,000) |
Net loss | (3,654,000) | | | |
Balance, shares at Sep. 30, 2020 | | 1,749,000 | | |
Balance, amount at Sep. 30, 2020 | 7,602,000 | $ 17,000 | 16,211,000 | (8,626,000) |
Balance, shares at Mar. 31, 2020 | | 1,730,000 | | |
Balance, amount at Mar. 31, 2020 | 10,227,000 | $ 16,000 | 16,108,000 | (5,897,000) |
Value of stock-based compensation, Shares | | 0 | | |
Value of stock-based compensation | 59,000 | 0 | 59,000 | 0 |
Net loss | (1,843,000) | $ 0 | 0 | (1,843,000) |
Repurchase of common stock upon vesting of restricted stock units, shares | | 4,000 | | |
Repurchase of common stock upon vesting of restricted stock units, amount | 0 | $ 0 | 0 | 0 |
Balance, shares at Jun. 30, 2020 | | 1,734,000 | | |
Balance, amount at Jun. 30, 2020 | 8,443,000 | $ 16,000 | 16,167,000 | (7,740,000) |
Value of stock-based compensation, Shares | | 0 | | |
Value of stock-based compensation | 37,000 | 0 | 37,000 | 0 |
Issuance of common stock, net, amount | 9,000 | 0 | 9,000 | 0 |
Net loss | (886,000) | $ 0 | 0 | (886,000) |
Vesting of restricted stock units offset by repurchase of common stock upon vesting of retricted stock units and awards, shares | | 13,000 | | |
Vesting of restricted stock units offset by repurchase of common stock upon vesting of retricted stock units and awards, amount | (1,000) | $ 1,000 | (2,000) | 0 |
Common stock issued for accrued liabilities, shares | | 2,000 | | |
Balance, shares at Sep. 30, 2020 | | 1,749,000 | | |
Balance, amount at Sep. 30, 2020 | 7,602,000 | $ 17,000 | 16,211,000 | (8,626,000) |
Balance, shares at Dec. 31, 2020 | | 1,748,000 | | |
Balance, amount at Dec. 31, 2020 | 6,668,000 | $ 17,000 | 16,238,000 | (9,587,000) |
Value of stock-based compensation, Shares | | $ 0 | | |
Value of stock-based compensation | 56,000 | | 56,000 | 0 |
Issuance of common stock, net, shares | | 6,000 | | |
Issuance of common stock, net, amount | 26,000 | $ 1,000 | 25,000 | 0 |
Net loss | (737,000) | $ 0 | 0 | (737,000) |
Balance, shares at Mar. 31, 2021 | | 1,754,000 | | |
Balance, amount at Mar. 31, 2021 | 6,013,000 | $ 18,000 | 16,319,000 | (10,324,000) |
Balance, shares at Dec. 31, 2020 | | 1,748,000 | | |
Balance, amount at Dec. 31, 2020 | 6,668,000 | $ 17,000 | 16,238,000 | (9,587,000) |
Net loss | (2,552,000) | | | |
Balance, shares at Sep. 30, 2021 | | 1,768,000 | | |
Balance, amount at Sep. 30, 2021 | 4,322,000 | $ 18,000 | 16,443,000 | (12,139,000) |
Balance, shares at Mar. 31, 2021 | | 1,754,000 | | |
Balance, amount at Mar. 31, 2021 | 6,013,000 | $ 18,000 | 16,319,000 | (10,324,000) |
Value of stock-based compensation, Shares | | 0 | | |
Value of stock-based compensation | 86,000 | 0 | 86,000 | 0 |
Net loss | (894,000) | $ 0 | 0 | (894,000) |
Repurchase of common stock upon vesting of restricted stock units, shares | | 11,000 | | |
Repurchase of common stock upon vesting of restricted stock units, amount | (9,000) | $ 0 | (9,000) | 0 |
Balance, shares at Jun. 30, 2021 | | 1,765,000 | | |
Balance, amount at Jun. 30, 2021 | 5,196,000 | $ 18,000 | 16,396,000 | (11,218,000) |
Value of stock-based compensation, Shares | | 0 | | |
Value of stock-based compensation | 56,000 | 0 | 56,000 | 0 |
Net loss | (921,000) | $ 0 | 0 | (921,000) |
Repurchase of common stock upon vesting of restricted stock units, shares | | 3,000 | | |
Repurchase of common stock upon vesting of restricted stock units, amount | (9,000) | $ 0 | (9,000) | 0 |
Balance, shares at Sep. 30, 2021 | | 1,768,000 | | |
Balance, amount at Sep. 30, 2021 | $ 4,322,000 | $ 18,000 | $ 16,443,000 | $ (12,139,000) |