XML 78 R68.htm IDEA: XBRL DOCUMENT v3.7.0.1
Regulatory Matters - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Jan. 21, 2016
Dec. 31, 2009
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]        
FDIC assessment expense $ 162,000 $ 460,000    
Tier 1 capital limitation, interest 25.00%      
Capital securities qualified as Tier 1 capital $ 62,700,000      
Total capital 90,000,000      
Capital securities qualified as Tier 2 capital $ 27,300,000      
Maximum [Member]        
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]        
Brokered deposits limit 6.00%      
Capital securities qualified as Tier 1 capital       $ 15,000,000,000
OCC Agreement [Member]        
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]        
Penalties payable     $ 25,000  
Dividends received with regulatory approval $ 20,000,000