Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.23.1
Subsequent Events (Details) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 02, 2023
Feb. 28, 2023
Jan. 10, 2023
Feb. 28, 2023
Mar. 30, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Nov. 30, 2021
Subsequent Event [Line Items]                  
Net proceeds from the sale of common shares           $ 39,291,945 $ 56,060,472    
Interest rate           8.52%      
Term of Federal Home Loan Bank of Boston Classic Advance Rate             5 years    
Spread on variable rate           5.75%   1.75%  
Amortization period           20 years      
March 2027                  
Subsequent Event [Line Items]                  
Interest rate           6.00%      
New Haven Bank Mortgage                  
Subsequent Event [Line Items]                  
Principal amount             $ 1,400,000   $ 1,400,000
Interest rate             3.75%    
Interest accrued period             72 months    
New Haven Bank Mortgage | Federal Home Loan Bank of Boston Classic Advance Rate                  
Subsequent Event [Line Items]                  
Spread on variable rate             2.60%    
Subsequent Events                  
Subsequent Event [Line Items]                  
Dividend paid (in dollars per share)     $ 0.13            
Payments of Ordinary Dividends     $ 5,342,160            
Subsequent Events | Credit and Security Agreement with Needham Bank | Revolving Credit Facility                  
Subsequent Event [Line Items]                  
Amount of credit facility $ 45,000,000                
Maximum borrowing capacity $ 75,000,000                
Interest rate 4.50%                
Right to extend the term (in years) 1 year                
Subsequent Events | Credit and Security Agreement with Needham Bank | Revolving Credit Facility | Minimum                  
Subsequent Event [Line Items]                  
Notice period for terminating the Credit Facility, prior to the proposed date of termination 10 days                
Subsequent Events | Prime Rate | Credit and Security Agreement with Needham Bank | Revolving Credit Facility                  
Subsequent Event [Line Items]                  
Percentage reduced from prime rate for calculating annual interest rate (0.25%)                
Subsequent Events | Restricted common shares | Employees                  
Subsequent Event [Line Items]                  
Shares granted       44,500          
Market value of shares granted       $ 141,000          
Subsequent Events | Restricted common shares | Employees | Vested immediately on the grant date                  
Subsequent Event [Line Items]                  
Vesting percentage       0.33%          
Subsequent Events | Restricted common shares | Employees | Vested on first anniversary                  
Subsequent Event [Line Items]                  
Vesting percentage       0.33%          
Subsequent Events | Restricted common shares | Employees | Vested on second anniversary                  
Subsequent Event [Line Items]                  
Vesting percentage       0.33%          
Subsequent Events | New Haven Bank Mortgage                  
Subsequent Event [Line Items]                  
Principal amount   $ 1,660,000   $ 1,660,000          
Interest rate   5.75%   5.75%          
Interest accrued period   60 months              
Term of Federal Home Loan Bank of Boston Classic Advance Rate   5 years              
Amortization period   20 years              
Subsequent Events | New Haven Bank Mortgage | Federal Home Loan Bank of Boston Classic Advance Rate                  
Subsequent Event [Line Items]                  
Spread on variable rate   1.75%              
Subsequent Events | At The Market Offering                  
Subsequent Event [Line Items]                  
Number of shares issued during the period         2,479,798        
Aggregate liquidation preference         $ 154,675        
Proceeds from Issuance Initial Public Offering         $ 139,500        
Discount on liquidation preference Percentage         10.00%        
Gross proceeds from sale of shares         $ 9,400,000