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Stockholders' Equity - Additional Information (Details) - shares
Jun. 30, 2022
Dec. 31, 2021
Feb. 28, 2021
Class Of Stock [Line Items]      
Common stock, reserved for future issuance 3,454,000 2,739,000  
2021 Inducement Plan      
Class Of Stock [Line Items]      
Shares available for grant     300,000
Common stock, reserved for future issuance [1] 44,000 81,000  
2016 Equity Incentive Plan      
Class Of Stock [Line Items]      
Common stock, reserved for future issuance [2] 451,000 332,000  
2016 Equity Incentive Plan | NimbeLink      
Class Of Stock [Line Items]      
Common stock, reserved for future issuance 22,871    
[1] On February 5, 2021, 300,000 shares were authorized pursuant to the terms of the Inducement Plan; 69,000 shares were issued under the Inducement Plan during the six months ended June 30, 2022.
[2] On January 1, 2022, the number of authorized shares in the 2016 Plan increased by 404,000 shares pursuant to the evergreen provisions of the 2016 Plan.