Annual report pursuant to Section 13 and 15(d)

Borrowings - Borrowings (Detail)

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Borrowings - Borrowings (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Outstanding Balance      
Overnight advances $ 15,000    
Outstanding advances $ 90,000 $ 55,000  
Weighted Average Rate      
Outstanding advances (percent) 1.70% 2.56% 1.41%
FHLB of San Francisco      
Outstanding Balance      
Overnight advances $ 15,000 $ 55,000  
Advances due within 12 months 25,000 0  
Advances due over 12 months through 24 months 25,000 0  
Advances due over 24 months through 36 months 25,000 0  
Outstanding advances $ 90,000 $ 55,000  
Weighted Average Rate      
Overnight advances (percent) 1.66% 2.56%  
Advances due within 12 months 1.75% 0.00%  
Advances due over 12 months through 24 months (percent) 1.66% 0.00%  
Advances due over 24 months through 36 months (percent) 1.72% 0.00%  
Outstanding advances (percent) 1.70% 2.56%