XML 107 R97.htm IDEA: XBRL DOCUMENT v3.21.2
SUBSEQUENT EVENTS (Details)
$ / shares in Units, $ in Thousands
 9 Months Ended
Oct. 18, 2021
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
tradingDay
branch
Dec. 31, 2020
USD ($)
Subsequent Event [Line Items]      
Number of trading days | tradingDay   20  
Loans receivable   $ 6,228,575 $ 5,898,405
Total assets   8,278,741 7,877,334
Deposits   6,543,225 $ 6,085,800
Pacific Mercantile Bancorp (“PMB”)      
Subsequent Event [Line Items]      
Loans receivable   982,400  
Total assets   1,490,000  
Deposits   1,290,000  
Pacific Mercantile Bancorp (“PMB”) | Subsequent Event      
Subsequent Event [Line Items]      
Exchange ratio 0.5    
Common Stock | Subsequent Event      
Subsequent Event [Line Items]      
Closing price of BOC's common stock (in USD per share) | $ / shares $ 18.74    
Pacific Mercantile Bancorp (“PMB”)      
Subsequent Event [Line Items]      
Pro forma purchase adjustments   $ 9,800,000  
Number of full services branches | branch   33  
Pacific Mercantile Bancorp (“PMB”) | Subsequent Event      
Subsequent Event [Line Items]      
Stock consideration $ 222,200    
Cash paid at closing 3,200    
Aggregate purchase price $ 225,400    
Pacific Mercantile Bancorp (“PMB”) | Common Stock | Subsequent Event      
Subsequent Event [Line Items]      
BOC common stock shares issued (in shares) | shares 11,856,713