XML 89 R65.htm IDEA: XBRL DOCUMENT v3.8.0.1
Acquisitions - Additional Information (Detail) - USD ($)
 12 Months Ended
Oct. 17, 2017
Sep. 01, 2017
Feb. 03, 2017
Jul. 18, 2016
Jun. 01, 2016
Jul. 01, 2015
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Aug. 31, 2017
Nov. 07, 2016
Business Acquisition [Line Items]                      
Common stock, shares outstanding [1]             25,529,819 22,171,596      
Acquisition of goodwill             $ 119,880,000 $ 76,941,000 $ 49,600,000    
Ownership interest percentage   5.00%                  
Operating revenue, net of tax             2,600,000 4,300,000 2,300,000    
Non-recurring expense, net of tax             $ 2,700,000 4,800,000 3,300,000    
Peoples Bancorp Inc [Member]                      
Business Acquisition [Line Items]                      
Exchange ratio per share           142.50%          
Common stock, shares outstanding           2,311,858          
Common stock issued           3,288,303          
Market closing price per share           $ 16.88          
Costs related to the acquisition                 $ 4,900,000    
Total estimated purchase price           $ 78,147,000          
Net intangible assets acquired           4,394,000          
Acquisition of goodwill           21,424,000          
Purchase price of the business assets, portion deductible           $ 0          
Core deposit intangible amortization period                 10 years    
Share of common stock outstanding per share           $ 9.75          
Payments received as cash consideration                 $ (182,413,000)    
Performing portion of the loan portfolio acquired           $ 223,400,000          
Estimated fair value of performing portion of the loan portfolio           220,000,000          
Loan portfolio acquired           228,600,000          
Discount on loan portfolio acquired           $ 4,800,000          
Peoples Bancorp Inc [Member] | Maximum [Member]                      
Business Acquisition [Line Items]                      
Number of shares owned           100          
Share of common stock outstanding per share           $ 33.14          
Kosciusko Financial Inc [Member]                      
Business Acquisition [Line Items]                      
Exchange ratio per share         451.83%            
Cash paid for each share         $ 81.75            
Common stock issued         873,430            
Market closing price per share         $ 16.57            
Estimated transaction value         $ 23,000,000            
Costs related to the acquisition         2,000,000            
Total estimated purchase price         22,983,000            
Net intangible assets acquired         526,000            
Acquisition of goodwill         6,443,000            
Purchase price of the business assets, portion deductible         $ 0            
Core deposit intangible amortization period             10 years        
Payments received as cash consideration               (30,437,000)      
Business combination stock transferred, percentage of consideration         65.00%            
Business combination cash transferred, percentage of consideration         35.00%            
Kosciusko Financial Inc [Member] | Maximum [Member]                      
Business Acquisition [Line Items]                      
Number of shares owned         100            
Share of common stock outstanding per share         $ 81.75            
LaPorte Bancorp Inc [Member]                      
Business Acquisition [Line Items]                      
Exchange ratio per share       94.35%              
Cash paid for each share       $ 17.50              
Common stock issued       3,421,488              
Market closing price per share       $ 18.36              
Estimated transaction value       $ 98,600,000              
Costs related to the acquisition               $ 4,000,000      
Total estimated purchase price       98,634,000              
Net intangible assets acquired       2,514,000              
Acquisition of goodwill       20,993,000              
Purchase price of the business assets, portion deductible       $ 0              
Core deposit intangible amortization period               10 years      
Payments received as cash consideration               $ (116,521,000)      
Business combination stock transferred, percentage of consideration       65.00%              
Business combination cash transferred, percentage of consideration       35.00%              
Central National Bank & Trust [Member]                      
Business Acquisition [Line Items]                      
Costs related to the acquisition               $ 779,000      
Total estimated purchase price                     $ 5,311,000
Net intangible assets acquired                     190,000
Acquisition of goodwill                     609,000
Purchase price of the business assets, portion deductible                     5,311,000
Core deposit intangible amortization period               10 years      
Payments received as cash consideration               $ (22,549,000)      
Performing portion of the loan portfolio acquired                     10,800,000
Estimated fair value of performing portion of the loan portfolio                     $ 10,500,000
Wolverine Bancorp Inc [Member]                      
Business Acquisition [Line Items]                      
Exchange ratio per share 101.52%                    
Cash paid for each share $ 14.00                    
Common stock, shares outstanding 2,129,331                    
Common stock issued 2,160,697                    
Market closing price per share $ 29.06                    
Estimated transaction value $ 93,800,000                    
Costs related to the acquisition 1,900,000                    
Total estimated purchase price 93,773,000                    
Net intangible assets acquired 2,024,000                    
Acquisition of goodwill 26,827,000                    
Purchase price of the business assets, portion deductible $ 0                    
Core deposit intangible amortization period             10 years        
Payments received as cash consideration             $ (12,788,000)        
Lafayette Community Bancorp [Member]                      
Business Acquisition [Line Items]                      
Exchange ratio per share   58.78%                  
Cash paid for each share   $ 1.73                  
Common stock, shares outstanding   1,856,679                  
Common stock issued   1,091,259                  
Market closing price per share                   $ 26.17  
Estimated transaction value                   $ 34,500,000  
Costs related to the acquisition   $ 1,700,000                  
Total estimated purchase price   34,465,000                  
Net intangible assets acquired   2,085,000                  
Acquisition of goodwill   15,408,000                  
Purchase price of the business assets, portion deductible   0                  
Core deposit intangible amortization period             10 years        
Gain on remeasurement of equity interest   $ 530,000         $ 530,000        
Payments received as cash consideration             $ (20,425,000)        
Lafayette Community Bancorp [Member] | Maximum [Member]                      
Business Acquisition [Line Items]                      
Number of shares owned   100                  
Share of common stock outstanding per share   $ 17.25                  
First Farmers Bank & Trust Co [Member]                      
Business Acquisition [Line Items]                      
Net intangible assets acquired     $ 452,000,000                
Acquisition of goodwill     $ 0                
Core deposit intangible amortization period     10 years                
Payments received as cash consideration     $ 11,000,000                
Business acquisition, loans assumed     $ 3,400,000                
Premium on deposits paid     3.00%                
Business acquisition, customer deposit balances     $ 14,800,000                
[1] Adjusted for 3:2 stock split on November 14, 2016.