XML 70 R59.htm IDEA: XBRL DOCUMENT v3.5.0.2
Loans - Impaired Loans (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unpaid Contractual Principal Balance $ 98,394 $ 89,981
Recorded Investment With No Allowance 61,588 60,944
Recorded Investment With Allowance 16,341 16,534
Total Recorded Investment 77,929 77,478
Related Allowance 8,102 4,378
Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unpaid Contractual Principal Balance 32,079 26,067
Recorded Investment With No Allowance 18,723 18,776
Recorded Investment With Allowance 6,251 4,084
Total Recorded Investment 24,974 22,860
Related Allowance 4,727 2,378
Commercial and industrial, Energy [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unpaid Contractual Principal Balance 51,030 25,240
Recorded Investment With No Allowance 34,217 8,689
Recorded Investment With Allowance 8,410 12,450
Total Recorded Investment 42,627 21,139
Related Allowance 2,500 2,000
Commercial real estate, Buildings, land and other [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unpaid Contractual Principal Balance 14,131 37,126
Recorded Investment With No Allowance 7,840 32,425
Recorded Investment With Allowance 1,680 0
Total Recorded Investment 9,520 32,425
Related Allowance 875 0
Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unpaid Contractual Principal Balance 326 793
Recorded Investment With No Allowance 326 569
Recorded Investment With Allowance 0 0
Total Recorded Investment 326 569
Related Allowance 0 0
Consumer Real Estate [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unpaid Contractual Principal Balance 725 755
Recorded Investment With No Allowance 428 485
Recorded Investment With Allowance 0 0
Total Recorded Investment 428 485
Related Allowance 0 0
Consumer and Other [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unpaid Contractual Principal Balance 103 0
Recorded Investment With No Allowance 54 0
Recorded Investment With Allowance 0 0
Total Recorded Investment 54 0
Related Allowance $ 0 $ 0