XML 62 R49.htm IDEA: XBRL DOCUMENT v3.22.1
Available for Sale Securities - Summary of Gross Unrealized Losses on Securities Available-for-sale and Fair Values (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]    
Fair Value $ 58,585 $ 9,219
Unrealized Loss (571) (23)
Fair Value 4,105 638
Unrealized Loss (123) (7)
Fair Value 62,690 9,857
Unrealized Loss (694) (30)
US Treasury Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 12,971  
Unrealized Loss (25)  
Fair Value 12,971  
Unrealized Loss (25)  
US States and Political Subdivisions Debt Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 5,414 4,235
Unrealized Loss (82) (11)
Fair Value 4,105 0
Unrealized Loss (123) 0
Fair Value 9,519 4,235
Unrealized Loss (205) (11)
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 39,392 4,984
Unrealized Loss (463) (12)
Fair Value   0
Unrealized Loss   0
Fair Value 39,392 4,984
Unrealized Loss (463) (12)
Asset-backed Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 808 0
Unrealized Loss (1) 0
Fair Value   638
Unrealized Loss   (7)
Fair Value 808 638
Unrealized Loss $ (1) $ (7)