XML 74 R58.htm IDEA: XBRL DOCUMENT v3.6.0.2
Business Combinations - Additional Information (Detail)
 12 Months Ended
Feb. 29, 2016
USD ($)
Branch
May 15, 2014
USD ($)
Branch
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Sep. 30, 2014
Branch
Business Acquisition [Line Items]            
Acquisition date     Oct. 16, 2009      
Goodwill     $ 89,533,000 $ 74,244,000 $ 74,244,000  
Non-recurring merger related expenses     $ 1,897,000 475,000 $ 1,973,000  
American Security Bank [Member]            
Business Acquisition [Line Items]            
Acquisition date         May 15, 2014  
Number of branches owned by merger company | Branch   5        
Acquired assets and assumed liabilities for cash   $ 57,000,000        
Goodwill   19,100,000        
Total fair value of assets acquired   436,400,000        
Cash and balances due from depository institutions   117,800,000        
FHLB stock   1,900,000        
Loans and lease finance receivables   242,700,000        
Fixed assets   4,800,000        
Core deposit intangible assets   2,100,000        
Other assets   1,800,000        
Deposits   378,400,000        
Other liabilities   1,000,000        
Investment securities available for sale   44,500,000        
Other real estate owned   1,600,000        
Total fair value of liabilities assumed   $ 379,400,000        
American Security Bank [Member] | Electronic Branch [Member]            
Business Acquisition [Line Items]            
Number of branches owned by merger company | Branch   2        
Number of banking vestibules closed | Branch           2
American Security Bank [Member] | Loan Production Office [Member]            
Business Acquisition [Line Items]            
Number of branches owned by merger company | Branch   1        
County Commerce Bank [Member]            
Business Acquisition [Line Items]            
Acquisition date     Feb. 29, 2016      
Number of branches owned by merger company | Branch 4          
Acquired assets and assumed liabilities for cash $ 20,600,000          
Assets and assumed all of the liabilities, stock 21,600,000          
Goodwill 15,300,000          
Total fair value of assets acquired 252,400,000          
Cash and balances due from depository institutions 54,800,000          
FHLB stock 1,500,000          
Loans and lease finance receivables 168,000,000          
Fixed assets 8,600,000          
Core deposit intangible assets 3,900,000          
Other assets 289,000          
Total fair value of liabilities assumed 230,800,000          
Deposits 224,200,000          
Other liabilities 1,600,000          
FHLB advances $ 5,000,000          
Non-recurring merger related expenses     $ 1,400,000 $ 475,000