XML 83 R72.htm IDEA: XBRL DOCUMENT v3.7.0.1
Loans and Allowance for Loan Losses - Schedule of Recorded Investment in Residential and Consumer Loans Based on Payment Activity (Detail) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment $ 1,871,047 $ 1,875,030 $ 1,893,163
Residential real estate 2,099,374 2,087,530 $ 2,099,770
Consumer Home Equity [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment 472,198 476,439  
Consumer Home Equity [Member] | Performing Financing Receivable [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment, Performing 466,421 472,008  
Consumer Home Equity [Member] | Nonperforming Financing Receivable [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment, Nonperforming 5,777 4,431  
Consumer Auto [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment 1,181,270 1,167,737  
Consumer Auto [Member] | Performing Financing Receivable [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment, Performing 1,178,937 1,166,114  
Consumer Auto [Member] | Nonperforming Financing Receivable [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment, Nonperforming 2,333 1,623  
Consumer - Other [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment 217,579 230,854  
Consumer - Other [Member] | Performing Financing Receivable [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment, Performing 212,106 223,786  
Consumer - Other [Member] | Nonperforming Financing Receivable [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment, Nonperforming 5,473 7,068  
Residential [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Residential real estate 2,099,374 2,087,530  
Residential [Member] | Performing Financing Receivable [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment, Performing 2,080,345 2,069,856  
Residential [Member] | Nonperforming Financing Receivable [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Finance receivable recorded investment, Nonperforming $ 19,029 $ 17,674