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CONSOLIDATED STATEMENTS OF MEMBERS'/STOCKHOLDERS' EQUITY - USD ($) | Membership Equity [Member] Class A [Member] | Membership Equity [Member] Class B [Member] | Membership Equity [Member] Class C [Member] | Membership Equity [Member] Common [Member] | Common Stock [Member] | Preferred Stock [Member] Series A Preferred Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Member] | Total | Series A Preferred Stock [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2020 | $ 23,202,000 | $ 1,400,000 | $ 1,000,000 | $ 198,000 | $ 0 | $ 0 | $ 0 | $ (18,141,000) | $ 7,659,000 |
Balance (in shares) at Dec. 31, 2020 |  |  |  |  | 0 | 0 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Brooklyn rights offerings membership units | 10,500,000 | 0 | 0 | 0 | $ 0 | $ 0 | 0 | 0 | 10,500,000 |
Elimination of Eterna LLC's historical members' equity | (33,702,000) | (1,400,000) | (1,000,000) | (198,000) | 0 | 0 | 36,300,000 | 0 | 0 |
Common stock to be retained by NTN stockholders | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 8,178,000 | 0 | 8,178,000 |
Common stock to be retained by NTN stockholders (in shares) |  |  |  |  | 76,000 | 0 |  |  |  |
Issuance of Series A preferred stock retained by NTN stockholders | 0 | 0 | 0 | 0 | $ 0 | $ 1,000 | (1,000) | 0 | 0 |
Issuance of Series A preferred stock retained by NTN stockholders (in shares) |  |  |  |  | 0 | 156,000 |  |  |  |
Issuance of common stock to Eterna LLC members | 0 | 0 | 0 | 0 | $ 10,000 | $ 0 | (10,000) | 0 | 0 |
Issuance of common stock to Eterna LLC members (in shares) |  |  |  |  | 1,946,000 | 0 |  |  |  |
Issuance of common stock to Financial Advisor upon consummation of merger | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 5,765,000 | 0 | 5,765,000 |
Issuance of common stock to Financial Advisor upon consummation of merger (in shares) |  |  |  |  | 53,000 | 0 |  |  |  |
Issuance of common stock from the exercise of stock options | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 10,000 | 0 | 10,000 |
Issuance of common stock from the exercise of stock options (in shares) |  |  |  |  | 0 | 0 |  |  |  |
Issuance of common stock related to stock purchase agreement with Lincoln Park Capital Fund, LLC, net | 0 | 0 | 0 | 0 | $ 1,000 | $ 0 | 52,024,000 | 0 | 52,025,000 |
Issuance of common stock related to stock purchase agreement with Lincoln Park Capital Fund, LLC, net (in shares) |  |  |  |  | 178,000 | 0 |  |  |  |
Issuance of common stock in connection with the acquisition of Novellus, Inc. | 0 | 0 | 0 | 0 | $ 2,000 | $ 0 | 58,682,000 | 0 | 58,684,000 |
Issuance of common stock in connection with the acquisition of Novellus, Inc. (in shares) |  |  |  |  | 351,000 | 0 |  |  |  |
Cash dividends to Series A preferred stockholders | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 0 | (8,000) | (8,000) | $ (8,000)
Cash dividends to Series A preferred stockholders (in shares) |  |  |  |  | 0 | 0 |  |  |  | 10
Issuance of common stock in lieu of cash dividend to Series A convertible preferred stockholders | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 8,000 | (8,000) | 0 |
Issuance of common stock in lieu of cash dividend to Series A convertible preferred stockholders (in shares) |  |  |  |  | 0 | 0 |  |  |  |
Forfeiture of unvested restricted stock | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 0 | 0 | 0 |
Forfeiture of unvested restricted stock (in shares) |  |  |  |  | (3,000) | 0 |  |  |  |
Stock based compensation | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 5,235,000 | 0 | 5,235,000 |
Net loss | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (122,545,000) | (122,545,000) |
Balance at Dec. 31, 2021 | 0 | 0 | 0 | 0 | $ 13,000 | $ 1,000 | 166,191,000 | (140,702,000) | 25,503,000 |
Balance (in shares) at Dec. 31, 2021 |  |  |  |  | 2,601,000 | 156,000 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Issuance of common stock and pre-funded warrants in connection with March 2022 private offering, net. | 0 | 0 | 0 | 0 | $ 1,000 | $ 0 | (1,000) | 0 | 0 |
Issuance of common stock and pre-funded warrants in connection with March 2022 private offering, net. (in shares) |  |  |  |  | 275,000 | 0 |  |  |  |
Issuance of common stock and warrants in connection with November 2022 private offering, net. | 0 | 0 | 0 | 0 | $ 12,000 | $ 0 | 7,383,000 | 0 | 7,395,000 |
Issuance of common stock and warrants in connection with November 2022 private offering, net. (in shares) |  |  |  |  | 2,185,000 | 0 |  |  |  |
Issuance of common stock from exercise of pre-funded warrants | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 874,000 | 0 | 874,000 |
Issuance of common stock from exercise of pre-funded warrants (in shares) |  |  |  |  | 68,000 | 0 |  |  |  |
Issuance of common stock from vested restricted stock units | 0 | 0 | 0 | 0 | $ 0 | $ 0 | (5,000) | 0 | (5,000) |
Issuance of common stock from vested restricted stock units (in shares) |  |  |  |  | 2,000 | 0 |  |  |  |
Cash dividends to Series A preferred stockholders | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 0 | (16,000) | (16,000) | $ (16,000)
Cash dividends to Series A preferred stockholders (in shares) |  |  |  |  | 0 | 0 |  |  |  |
Forfeiture of unvested restricted stock | 0 | 0 | 0 | 0 | $ 0 | $ 0 | 0 | 0 | 0 |
Forfeiture of unvested restricted stock (in shares) |  |  |  |  | (4,000) | 0 |  |  |  |
Stock based compensation |  |  |  |  | $ 0 | $ 0 | 2,935,000 | 0 | 2,935,000 |
Net loss |  |  |  |  | 0 | 0 | 0 | (24,579,000) | (24,579,000) |
Balance at Dec. 31, 2022 | $ 0 | $ 0 | $ 0 | $ 0 | $ 26,000 | $ 1,000 | $ 177,377,000 | $ (165,297,000) | $ 12,107,000 |
Balance (in shares) at Dec. 31, 2022 |  |  |  |  | 5,127,000 | 156,000 |  |  |  |

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