XML 65 R53.htm IDEA: XBRL DOCUMENT v3.10.0.1
Securities (Summary of Volume of State and Political Subdivision Securities Held in Portfolio) (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]    
Total Amortized Cost $ 292,098 $ 324,908
Available for sale securities, Unrealized Gains 1,122 5,329
Available for sale securities, Unrealized Losses 5,180 1,514
Available for sale securities, Estimated Fair Value 288,040 $ 328,723 [1]
Texas    
Debt Securities, Available-for-sale [Line Items]    
Total Amortized Cost 21,796  
Available for sale securities, Unrealized Gains 65  
Available for sale securities, Unrealized Losses 202  
Available for sale securities, Estimated Fair Value 21,659  
CALIFORNIA    
Debt Securities, Available-for-sale [Line Items]    
Total Amortized Cost 18,021  
Available for sale securities, Unrealized Gains 39  
Available for sale securities, Unrealized Losses 438  
Available for sale securities, Estimated Fair Value 17,622  
MICHIGAN    
Debt Securities, Available-for-sale [Line Items]    
Total Amortized Cost 14,631  
Available for sale securities, Unrealized Gains 40  
Available for sale securities, Unrealized Losses 311  
Available for sale securities, Estimated Fair Value 14,360  
WEST VIRGINIA    
Debt Securities, Available-for-sale [Line Items]    
Total Amortized Cost 13,258  
Available for sale securities, Unrealized Gains 50  
Available for sale securities, Unrealized Losses 179  
Available for sale securities, Estimated Fair Value 13,129  
ILLINOIS    
Debt Securities, Available-for-sale [Line Items]    
Total Amortized Cost 11,014  
Available for sale securities, Unrealized Gains 72  
Available for sale securities, Unrealized Losses 234  
Available for sale securities, Estimated Fair Value $ 10,852  
[1] Derived from audited consolidated financial statements