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Organization - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Jul. 31, 2022
Jun. 30, 2022
Jun. 30, 2021
Jun. 18, 2022
Dec. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Accumulated deficit   $ 192,215     $ 178,272
Proceeds from exercise of warrants   25      
Cash and cash equivalents   11,128     $ 15,045
Net cash used in operating activities   $ 14,577 $ 14,699    
Subsequent Event [Member]          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Proceeds from exercise of warrants $ 5,500        
Catheter Precision Inc [Member]          
Organization Consolidation And Presentation Of Financial Statements [Line Items]          
Percentage of outstanding equity interests acquire       100.00%