v3.25.2
Regulatory Matters (Tables)
 12 Months Ended
Jun. 30, 2025
Regulatory Matters [Abstract]  
Compliance with Regulatory Capital Requirements under Banking Regulations
                                
                                
                                
                                        
(Dollars in thousands)
Actual    For capital
adequacy purposes 		   To be well
capitalized under
prompt corrective
action provisions 		   Capital conservation
buffer
The Bank of Greene County
  Amount      Ratio      Amount      Ratio      Amount      Ratio      Actual      Required  
As of June 30, 2025:
                                      
Total risk-based capital
$293,952    16.6%  $141,305    8.0%  $176,632    10.0%   8.64%   2.50%
Tier 1 risk-based capital
 271,869    15.4    105,979    6.0    141,305    8.0    9.39    2.50 
Common equity tier 1 capital
 271,869    15.4    79,484    4.5    114,811    6.5    10.89    2.50 
Tier 1 leverage ratio
 271,869    9.2    117,646    4.0    147,057    5.0    5.24    2.50 
                                        
As of June 30, 2024:
                                      
Total risk-based capital
$273,460    17.1%  $127,873    8.0%  $159,841    10.0%   9.11%   2.50%
Tier 1 risk-based capital
 253,468    15.9    95,905    6.0    127,873    8.0    9.86    2.50 
Common equity tier 1 capital
 253,468    15.9    71,929    4.5    103,897    6.5    11.36    2.50 
Tier 1 leverage ratio
 253,468    9.3    109,102    4.0    136,378    5.0    5.29    2.50 
                                        
Greene County Commercial Bank
                                      
As of June 30, 2025:
                                      
Total risk-based capital
$122,243    46.9%  $20,871    8.0%  $26,089    10.0%   38.86%   2.50%
Tier 1 risk-based capital
 122,243    46.9    15,654    6.0    20,871    8.0    40.86    2.50 
Common equity tier 1 capital
 122,243    46.9    11,740    4.5    16,958    6.5    42.36    2.50 
Tier 1 leverage ratio
 122,243    9.1    53,543    4.0    66,929    5.0    5.13    2.50 
                                        
As of June 30, 2024:
                                      
Total risk-based capital
$110,319    49.5%  $17,830    8.0%  $22,288    10.0%   41.50%   2.50%
Tier 1 risk-based capital
 110,319    49.5    13,373    6.0    17,830    8.0    43.50    2.50 
Common equity tier 1 capital
 110,319    49.5    10,029    4.5    14,487    6.5    45.00    2.50 
Tier 1 leverage ratio
 110,319    9.1    48,385    4.0    60,481    5.0    5.12    2.50