Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
Loans - Information on Impaired Loans, Disaggregated by Loan Class (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Financing Receivable, Impaired [Line Items]      
Recorded Investment $ 35,859 $ 45,865 $ 53,066
Unpaid Principal Balance 39,363 49,586 56,563
With No Related Allowance Recorded 23,985 34,897 33,292
With an Allowance Recorded 11,874 10,968 19,774
Related Allowance 4,445 5,246 6,468
Average Recorded Investment 41,841 48,790 48,348
Interest Income Recognized 2,683 3,160 3,709
Real estate loans [Member] | Retail [Member]      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 2,597 4,436 6,244
Unpaid Principal Balance 2,892 4,546 6,332
With No Related Allowance Recorded 2,435 1,938 3,767
With an Allowance Recorded 162 2,498 2,477
Related Allowance 27 220 305
Average Recorded Investment 3,878 5,373 4,342
Interest Income Recognized 277 251 166
Real estate loans [Member] | Hotel/motel [Member]      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 7,168 5,835 6,200
Unpaid Principal Balance 7,538 6,426 6,940
With No Related Allowance Recorded 2,873 4,581 4,668
With an Allowance Recorded 4,295 1,254 1,532
Related Allowance 3,068 1,828 1,183
Average Recorded Investment 6,628 4,583 5,125
Interest Income Recognized 572 398 530
Real estate loans [Member] | Gas station [Member]      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 5,393 8,974 9,389
Unpaid Principal Balance 5,815 9,594 9,884
With No Related Allowance Recorded 4,400 8,526 8,592
With an Allowance Recorded 993 448 797
Related Allowance 112 150 209
Average Recorded Investment 7,116 11,281 8,939
Interest Income Recognized 436 787 756
Real estate loans [Member] | Other [Member]      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 9,288 10,125 11,451
Unpaid Principal Balance 10,810 11,591 12,882
With No Related Allowance Recorded 7,219 8,890 9,555
With an Allowance Recorded 2,069 1,235 1,896
Related Allowance 647 319 351
Average Recorded Investment 10,218 10,579 10,014
Interest Income Recognized 795 885 1,047
Real estate loans [Member] | Residential property [Member]      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 2,895 3,127 2,678
Unpaid Principal Balance 3,081 3,268 2,773
With No Related Allowance Recorded 2,608 3,127 2,678
With an Allowance Recorded 287 0 0
Related Allowance 4 0 0
Average Recorded Investment 2,839 2,924 2,941
Interest Income Recognized 120 115 117
Commercial and industrial loans [Member] | Commercial term [Member]      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 5,257 7,614 13,834
Unpaid Principal Balance 5,621 8,133 14,308
With No Related Allowance Recorded 1,858 2,999 2,929
With an Allowance Recorded 3,399 4,615 10,905
Related Allowance 457 2,443 3,806
Average Recorded Investment 6,637 9,458 13,083
Interest Income Recognized 368 566 968
Commercial and industrial loans [Member] | Commercial lines of credit [Member]      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 381 466 614
Unpaid Principal Balance 493 575 686
With No Related Allowance Recorded 280 466 173
With an Allowance Recorded 101 0 441
Related Allowance 100 0 252
Average Recorded Investment 1,515 1,205 1,008
Interest Income Recognized 42 66 54
Commercial and industrial loans [Member] | International loans [Member]      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 1,215 3,546 1,087
Unpaid Principal Balance 1,215 3,546 1,087
With No Related Allowance Recorded 647 2,628 286
With an Allowance Recorded 568 918 801
Related Allowance 30 286 78
Average Recorded Investment 1,257 1,736 1,284
Interest Income Recognized 0 33 0
Consumer loans [Member]      
Financing Receivable, Impaired [Line Items]      
Recorded Investment 1,665 1,742 1,569
Unpaid Principal Balance 1,898 1,907 1,671
With No Related Allowance Recorded 1,665 1,742 644
With an Allowance Recorded 0 0 925
Related Allowance 0 0 284
Average Recorded Investment 1,753 1,651 1,612
Interest Income Recognized $ 73 $ 59 $ 71