Quarterly report pursuant to Section 13 or 15(d)

Loans - Information on Impaired Loans, Disaggregated by Loan Class (Detail)

v2.4.0.8
Loans - Information on Impaired Loans, Disaggregated by Loan Class (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Financing Receivable, Impaired [Line Items]    
Recorded Investment $ 50,350 $ 53,066
Unpaid Principal Balance 53,769 56,563
With No Related Allowance Recorded 31,801 33,292
With an Allowance Recorded 18,549 19,774
Related Allowance 5,119 6,468
Average Recorded Investment 50,718 48,348
Interest Income Recognized 764 3,709
Real estate loans [Member] | Retail [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 7,278 6,244
Unpaid Principal Balance 7,398 6,332
With No Related Allowance Recorded 4,620 3,767
With an Allowance Recorded 2,658 2,477
Related Allowance 396 305
Average Recorded Investment 7,304 4,342
Interest Income Recognized 71 166
Real estate loans [Member] | Hotel/Motel [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 3,510 6,200
Unpaid Principal Balance 4,136 6,940
With No Related Allowance Recorded 2,992 4,668
With an Allowance Recorded 518 1,532
Related Allowance 59 1,183
Average Recorded Investment 3,531 5,125
Interest Income Recognized 49 530
Real estate loans [Member] | Gas station [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 9,421 9,389
Unpaid Principal Balance 9,960 9,884
With No Related Allowance Recorded 8,801 8,592
With an Allowance Recorded 620 797
Related Allowance 218 209
Average Recorded Investment 9,455 8,939
Interest Income Recognized 188 756
Real estate loans [Member] | Other [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 11,544 11,451
Unpaid Principal Balance 12,893 12,882
With No Related Allowance Recorded 8,314 9,555
With an Allowance Recorded 3,230 1,896
Related Allowance 355 351
Average Recorded Investment 11,624 10,014
Interest Income Recognized 223 1,047
Real estate loans [Member] | Residential property [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 2,540 2,678
Unpaid Principal Balance 2,648 2,773
With No Related Allowance Recorded 2,540 2,678
With an Allowance Recorded      
Related Allowance      
Average Recorded Investment 2,552 2,941
Interest Income Recognized 27 117
Commercial and industrial loans [Member] | Commercial term [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 12,658 13,834
Unpaid Principal Balance 13,136 14,308
With No Related Allowance Recorded 2,642 2,929
With an Allowance Recorded 10,016 10,905
Related Allowance 3,917 3,806
Average Recorded Investment 12,819 13,083
Interest Income Recognized 177 968
Commercial and industrial loans [Member] | Commercial lines of credit [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 733 614
Unpaid Principal Balance 815 686
With No Related Allowance Recorded 733 173
With an Allowance Recorded    441
Related Allowance    252
Average Recorded Investment 745 1,008
Interest Income Recognized 14 54
Commercial and industrial loans [Member] | International loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 1,113 1,087
Unpaid Principal Balance 1,113 1,087
With No Related Allowance Recorded 522 286
With an Allowance Recorded 591 801
Related Allowance 57 78
Average Recorded Investment 1,130 1,284
Interest Income Recognized      
Consumer loans [Member]
    
Financing Receivable, Impaired [Line Items]    
Recorded Investment 1,553 1,569
Unpaid Principal Balance 1,670 1,671
With No Related Allowance Recorded 637 644
With an Allowance Recorded 916 925
Related Allowance 117 284
Average Recorded Investment 1,558 1,612
Interest Income Recognized $ 15 $ 71