Quarterly report pursuant to Section 13 or 15(d)

Business Combinations (Detail Textuals)

v3.2.0.727
Business Combinations (Detail Textuals) - USD ($)
 6 Months Ended
Mar. 31, 2015
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Mar. 02, 2014
Mar. 30, 2012
Business Acquisition Line Items            
Goodwill   $ 678,369,000   $ 522,541,000    
Business Combination, Bargain Purchase, Gain Recognized, Amount   0 $ 0      
Fidelity Bank [Member]            
Business Acquisition Line Items            
Business Combinatio nRecognized Identifiable Assets Acquired And Liabilities Assumed Financial Assets           $ 523,900,000
Camco Financial [Member]            
Business Acquisition Line Items            
Business Combinatio nRecognized Identifiable Assets Acquired And Liabilities Assumed Financial Assets         $ 559,400,000  
Macquarie Equipment Finance [Member]            
Business Acquisition Line Items            
BusinessAcquisitionNameOfAcquiredEntity Macquarie Equipment Finance, Inc.          
Acquisition Date Mar. 31, 2015          
PaymentsToAcquireBusinessesGross $ 457,800,000          
Business Combinatio nRecognized Identifiable Assets Acquired And Liabilities Assumed Financial Assets   $ 838,600,000        
Total assets acquired as of acquisition date 1,100,000,000          
Total liabilities acquired as of acquisition date 616,600,000          
Goodwill $ 155,800,000