XML 68 R53.htm IDEA: XBRL DOCUMENT v3.10.0.1
Summary of Significant Accounting Policies (Details)
$ in Thousands
12 Months Ended
Jan. 01, 2018
USD ($)
Dec. 31, 2018
USD ($)
segment
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Property, Plant and Equipment [Line Items]        
Reserve requirements for banking subsidiaries   $ 6,600 $ 6,600  
Investment in qualified affordable housing projects   $ 1,000 1,400  
Number of reportable business segments | segment   3    
Retained earnings   $ 319,396 265,007  
Noninterest income   $ 77,449 69,204 $ 68,808
Reclassification due to the adoption of ASU No. 2018-02     0  
Minimum | Core deposit intangible        
Property, Plant and Equipment [Line Items]        
Amortization period for other intangible assets (in years)   5 years    
Minimum | Covenants Noncompete        
Property, Plant and Equipment [Line Items]        
Amortization period for other intangible assets (in years)   3 years    
Minimum | Customer relationships        
Property, Plant and Equipment [Line Items]        
Amortization period for other intangible assets (in years)   6 years    
Maximum | Core deposit intangible        
Property, Plant and Equipment [Line Items]        
Amortization period for other intangible assets (in years)   10 years    
Maximum | Covenants Noncompete        
Property, Plant and Equipment [Line Items]        
Amortization period for other intangible assets (in years)   6 years    
Maximum | Customer relationships        
Property, Plant and Equipment [Line Items]        
Amortization period for other intangible assets (in years)   15 years    
Building | Minimum        
Property, Plant and Equipment [Line Items]        
Estimated useful (in years)   10 years    
Building | Maximum        
Property, Plant and Equipment [Line Items]        
Estimated useful (in years)   39 years    
Furniture, fixtures, and equipment | Minimum        
Property, Plant and Equipment [Line Items]        
Estimated useful (in years)   2 years    
Furniture, fixtures, and equipment | Maximum        
Property, Plant and Equipment [Line Items]        
Estimated useful (in years)   20 years    
Accounting Standards Update 2014-09        
Property, Plant and Equipment [Line Items]        
Adoption of ASU 2016-01 $ 1,780      
Accounting Standards Update 2016-01        
Property, Plant and Equipment [Line Items]        
Adoption of ASU 2016-01 0      
Accounting Standards Update 2018-02        
Property, Plant and Equipment [Line Items]        
Reclassification due to the adoption of ASU No. 2018-02     10,000  
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09        
Property, Plant and Equipment [Line Items]        
Retained earnings 1,800      
Insurance Business Segment | Contingent Consideration | Difference between Revenue Guidance in Effect before and after Topic 606        
Property, Plant and Equipment [Line Items]        
Noninterest income 1,800      
Accumulated Other Comprehensive (Loss) Income        
Property, Plant and Equipment [Line Items]        
Reclassification due to the adoption of ASU No. 2018-02     $ (9,958)  
Accumulated Other Comprehensive (Loss) Income | Accounting Standards Update 2016-01        
Property, Plant and Equipment [Line Items]        
Adoption of ASU 2016-01 $ 65 $ 65