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Stock Awards and Stock-Based Compensation (Details) - USD ($)
3 Months Ended 12 Months Ended
Nov. 13, 2020
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Options Outstanding            
Beginning balance   387,109 395,002 395,002 346,806  
Options granted 281,648 2,647   7,443 52,347  
Options exercised   (1,230)   (15,121)    
Options canceled and forfeited   (756)   (215) (4,151)  
Ending balance   387,770   387,109 395,002 346,806
Options vested and exercisable   387,770   387,109    
Weighted Average Exercise Price            
Beginning balance   $ 6.40 $ 6.40 $ 6.40 $ 6.30  
Options granted   3.01   3.20 7.55  
Options exercised   3.25   6.30    
Options canceled and forfeited   7.94   4.40 3.85  
Ending balance   6.37   6.40 $ 6.40 $ 6.30
Options vested and exercisable   $ 6.37   $ 6.40    
Weighted Average Remaining Contractual Life (in years)            
Outstanding   1 year 2 months 15 days   1 year 5 months 12 days 2 years 5 months 1 day 3 years 2 months 15 days
Options vested and exercisable   1 year 2 months 15 days   1 year 5 months 12 days    
Aggregate Intrinsic Value            
Outstanding   $ 0   $ 0 $ 5,365,737  
Options vested and exercisable   0   0    
Aggregate intrinsic value of options exercised   $ 0 $ 37,000 $ 0 $ 0 $ 527,450
Weighted average grant-date fair value of options granted per share   $ 2.00 $ 16.72 $ 7.65 $ 9.55  
Weighted average grant-date fair value of options granted amount   $ 4,000 $ 29,000 $ 57,000 $ 500,000  
Grants | Board members            
Aggregate Intrinsic Value            
Stock based awards granted   0 3,000 49,000 141,000  
Grants | Various employees            
Aggregate Intrinsic Value            
Stock based awards granted   $ 26,000 149,000 $ 307,000 369,000  
Options            
Options Outstanding            
Beginning balance   387,109        
Ending balance   387,770   387,109    
Aggregate Intrinsic Value            
Restricted stock units outstanding   70,641   64,699    
Stock not yet issued   62,965   57,197    
Stock granted not yet vested   7,676   7,502    
Unrecognized stock-based compensation related to common stock grants   $ 15,000   $ 23,000    
Options | Board members            
Aggregate Intrinsic Value            
Stock based awards granted   0   0 114,000  
Options | Various employees            
Aggregate Intrinsic Value            
Stock based awards granted   $ 4,000 29,000 $ 57,000 500,000  
RSU            
Aggregate Intrinsic Value            
Restricted stock units outstanding   276,590   292,565    
Stock not yet issued   241,945   44,234    
Restricted stock units ("RSUs") granted but not yet vested   34,645   248,331    
Unrecognized stock compensation related to the RSUs   $ 22,000   $ 176,000    
RSU | Board members            
Aggregate Intrinsic Value            
Stock based awards granted   3,000 17,000 190,000 297,000  
RSU | Various employees            
Aggregate Intrinsic Value            
Stock based awards granted   $ 29,000 $ 89,000 $ 1,800,000 $ 1,470,000