v3.26.1
Securities - Schedule of Amortized Cost and Approximate Fair Values, together with Gross Unrealized Gains and Losses, of Securities (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Available-for-sale securities:    
Available-for-sale securities, Amortized cost $ 43,198,438 $ 43,911,383
Available-for-sale securities, Gross unrealized gains 9,875 58,001
Available-for-sale securities, Gross unrealized losses (1,032,851) (832,712)
Available-for-sale securities, Fair Value 42,175,462 43,136,672
Held-to-maturity securities:    
Held-to-maturity securities, Amortized cost 96,386,942 97,728,121
Held-to-maturity securities, Gross unrealized gains 32,048 190,080
Held-to-maturity securities, Gross unrealized losses (3,528,963) (3,462,323)
Held-to-maturity securities, Fair Value 92,890,027 94,455,878
U.S. Government and federal agency [Member]    
Available-for-sale securities:    
Available-for-sale securities, Amortized cost 14,959,400 14,830,375
Available-for-sale securities, Gross unrealized gains
Available-for-sale securities, Gross unrealized losses (10,700)
Available-for-sale securities, Fair Value 14,948,700 14,830,375
Held-to-maturity securities:    
Held-to-maturity securities, Amortized cost 42,598,382 42,681,410
Held-to-maturity securities, Gross unrealized gains 2,286
Held-to-maturity securities, Gross unrealized losses (704,582) (805,096)
Held-to-maturity securities, Fair Value 41,893,800 41,878,600
U.S. Government-sponsored enterprises (GSEs) [Member]    
Available-for-sale securities:    
Available-for-sale securities, Amortized cost 3,630 5,395
Available-for-sale securities, Gross unrealized gains
Available-for-sale securities, Gross unrealized losses
Available-for-sale securities, Fair Value 5,395
Held-to-maturity securities:    
Held-to-maturity securities, Amortized cost 13,363,836 13,599,444
Held-to-maturity securities, Gross unrealized gains
Held-to-maturity securities, Gross unrealized losses (290,909)
Held-to-maturity securities, Fair Value 13,308,535
Mortgage-backed [Member]    
Available-for-sale securities:    
Available-for-sale securities, Gross unrealized losses (11)  
Available-for-sale securities, Fair Value 3,619  
Held-to-maturity securities:    
Held-to-maturity securities, Gross unrealized losses (302,633)  
Held-to-maturity securities, Fair Value 13,361,203  
GSE residential [Member]    
Available-for-sale securities:    
Available-for-sale securities, Amortized cost 12,532,151 13,295,371
Available-for-sale securities, Gross unrealized gains 9,482 44,013
Available-for-sale securities, Gross unrealized losses (612,689) (552,361)
Available-for-sale securities, Fair Value 11,928,944 12,787,023
Held-to-maturity securities:    
Held-to-maturity securities, Amortized cost 36,216,636 37,534,375
Held-to-maturity securities, Gross unrealized gains 29,320 175,285
Held-to-maturity securities, Gross unrealized losses (2,306,773) (2,185,363)
Held-to-maturity securities, Fair Value 33,939,183 35,524,297
State and political subdivisions [Member]    
Available-for-sale securities:    
Available-for-sale securities, Amortized cost 15,703,257 15,780,242
Available-for-sale securities, Gross unrealized gains 393 13,988
Available-for-sale securities, Gross unrealized losses (409,451) (280,351)
Available-for-sale securities, Fair Value 15,294,199 15,513,879
Held-to-maturity securities:    
Held-to-maturity securities, Amortized cost 3,908,088 3,912,892
Held-to-maturity securities, Gross unrealized gains 2,728 12,509
Held-to-maturity securities, Gross unrealized losses (214,975) (180,955)
Held-to-maturity securities, Fair Value $ 3,695,841 $ 3,744,446