XML 76 R66.htm IDEA: XBRL DOCUMENT v3.21.2
Borrowings - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
May 28, 2020
Nov. 20, 2015
Sep. 30, 2021
Sep. 30, 2021
Dec. 31, 2020
Jan. 31, 2021
Debt Instrument [Line Items]            
FHLB borrowings     $ 125,115 $ 125,115 $ 115,000 [1]  
Federal home loan bank stock     6,000 6,000 5,800  
Subordinated notes, net outstanding     40,503 40,503 24,506 [1]  
Subordinated Notes [Member]            
Debt Instrument [Line Items]            
Subordinated notes, net outstanding     $ 40,500 $ 40,500 24,500  
Subordinated Notes [Member] | 2029 Bay Banks Notes [Member]            
Debt Instrument [Line Items]            
Subordinated debt instrument maturity date       Oct. 15, 2029    
Debt instrument interest rate stated percentage     5.625% 5.625%    
Debt Instrument, frequency of periodic payment       semi-annually    
Debt instrument carrying amount     $ 25,800 $ 25,800    
Debt instrument, unamortized premium     $ 830 $ 830    
Effective interest rate     4.63% 4.64%    
Subordinated Notes [Member] | 2029 Bay Banks Notes [Member] | SOFR [Member]            
Debt Instrument [Line Items]            
Debt instrument basis spread on variable rate1       433.50%    
Subordinated Notes [Member] | 2025 Bay Banks Notes [Member]            
Debt Instrument [Line Items]            
Subordinated debt instrument maturity date       May 28, 2025    
Debt instrument interest rate stated percentage     6.50% 6.50%    
Subordinated Notes [Member] | 2030 Notes [Member]            
Debt Instrument [Line Items]            
Subordinated debt instrument face value $ 15,000          
Maturity Date Jun. 01, 2030          
Effective interest rate     6.12% 6.12%    
Unamortized debt issuance cost     $ 14,700 $ 14,700    
Subordinated Notes [Member] | 2025 Notes [Member]            
Debt Instrument [Line Items]            
Subordinated debt instrument face value   $ 10,000        
Maturity Date   Dec. 01, 2025        
Unsecured Lines of Credit [Member]            
Debt Instrument [Line Items]            
Maximum overnight line of credit facilities available     64,000 64,000 38,000  
Overnight line of credit facilities outstanding     0 $ 0 0  
Federal Reserve Paycheck Protection Program Liquidity [Member]            
Debt Instrument [Line Items]            
Percentage of advances on PPP loan value and term       100.00%    
Fixed annual cost basis points       35.00%    
Total advances     33,900 $ 33,900 $ 281,600  
Federal Reserve Paycheck Protection Program Liquidity [Member] | Minimum [Member]            
Debt Instrument [Line Items]            
Borrowing maturity       6 months 1 year 2 months 12 days  
Federal Reserve Paycheck Protection Program Liquidity [Member] | Maximum [Member]            
Debt Instrument [Line Items]            
Borrowing maturity       3 years 25 days 4 years 6 months  
Bay Banks [Member] | Subordinated Notes [Member]            
Debt Instrument [Line Items]            
Subordinated notes, net outstanding           $ 30,900
Subordinated debt instrument face value           31,900
Bay Banks [Member] | Federal Reserve Paycheck Protection Program Liquidity [Member]            
Debt Instrument [Line Items]            
Total advances           24,800
FHLB [Member]            
Debt Instrument [Line Items]            
Federal home loan bank advances, maximum borrowing capacity percentage on assets       30.00%    
FHLB borrowings     125,100 $ 125,100 $ 115,000  
FHLB [Member] | Bay Banks [Member]            
Debt Instrument [Line Items]            
Federal home loan, advances assumed           $ 10,100
FHLB [Member] | Restricted Equity Investments [Member]            
Debt Instrument [Line Items]            
Federal home loan bank stock     6,000 6,000 $ 5,800  
FHLB [Member] | Line of Credit [Member]            
Debt Instrument [Line Items]            
Federal home loan bank, advances, general debt obligations, amount available     392,200 392,200    
FHLB borrowings     210,200 210,200    
FHLB [Member] | Line of Credit [Member] | 1-4 Family Residential Loans [Member]            
Debt Instrument [Line Items]            
Assets pledged with federal home loan bank against credit facilities     185,500 185,500    
FHLB [Member] | Line of Credit [Member] | Multi-Family Residential Loans [Member]            
Debt Instrument [Line Items]            
Assets pledged with federal home loan bank against credit facilities     35,000 35,000    
FHLB [Member] | Line of Credit [Member] | Commercial Real Estate Loans [Member]            
Debt Instrument [Line Items]            
Assets pledged with federal home loan bank against credit facilities     117,300 117,300    
FHLB [Member] | Line of Credit [Member] | 1-4 Family Residential Loans Held for Sale [Member]            
Debt Instrument [Line Items]            
Assets pledged with federal home loan bank against credit facilities     27,900 27,900    
FHLB [Member] | Line of Credit [Member] | Securities [Member]            
Debt Instrument [Line Items]            
Assets pledged with federal home loan bank against credit facilities     26,500 26,500    
FHLB [Member] | Line of Credit [Member] | Public Deposits with Treasury Board of Virginia [Member]            
Debt Instrument [Line Items]            
Assets pledged with federal home loan bank against credit facilities     $ 57,000 $ 57,000    
[1] Derived from audited December 31, 2020 Consolidated Financial Statements.