|
Loans - Information on Impaired Loans, Disaggregated by Loan Class (Detail) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
12 Months Ended |
|
Mar. 31, 2013
|
Mar. 31, 2012
|
Dec. 31, 2012
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
$ 49,651
|
|
$ 54,744
|
| Unpaid Principal Balance |
55,946
|
|
61,561
|
| With No Related Allowance Recorded |
33,873
|
|
28,830
|
| With an Allowance Recorded |
15,778
|
|
25,914
|
| Related Allowance |
4,884
|
|
6,231
|
| Average Recorded Investment |
49,987
|
|
60,732
|
| Interest Income Recognized |
896
|
1,106
|
4,541
|
|
Real Estate Loans [Member] | Retail [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
2,785
|
|
2,930
|
| Unpaid Principal Balance |
2,838
|
|
3,024
|
| With No Related Allowance Recorded |
1,835
|
|
2,930
|
| With an Allowance Recorded |
950
|
|
|
| Related Allowance |
42
|
|
|
| Average Recorded Investment |
2,796
|
|
2,357
|
| Interest Income Recognized |
26
|
|
136
|
|
Real Estate Loans [Member] | Land [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
1,687
|
|
2,097
|
| Unpaid Principal Balance |
1,937
|
|
2,307
|
| With No Related Allowance Recorded |
1,687
|
|
2,097
|
| Average Recorded Investment |
1,712
|
|
2,140
|
| Interest Income Recognized |
40
|
|
179
|
|
Real Estate Loans [Member] | Other [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
526
|
|
527
|
| Unpaid Principal Balance |
526
|
|
527
|
| With an Allowance Recorded |
526
|
|
527
|
| Related Allowance |
53
|
|
67
|
| Average Recorded Investment |
527
|
|
835
|
| Interest Income Recognized |
4
|
|
43
|
|
Real Estate Loans [Member] | Construction [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Average Recorded Investment |
|
|
6,012
|
| Interest Income Recognized |
|
|
207
|
|
Real Estate Loans [Member] | Residential Property [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
3,049
|
|
3,265
|
| Unpaid Principal Balance |
3,104
|
|
3,308
|
| With No Related Allowance Recorded |
3,049
|
|
1,866
|
| With an Allowance Recorded |
|
|
1,399
|
| Related Allowance |
|
|
94
|
| Average Recorded Investment |
3,059
|
|
3,268
|
| Interest Income Recognized |
27
|
|
164
|
|
Commercial and Industrial Loans [Member] | Unsecured [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
13,064
|
|
14,532
|
| Unpaid Principal Balance |
14,006
|
|
15,515
|
| With No Related Allowance Recorded |
4,206
|
|
6,826
|
| With an Allowance Recorded |
8,858
|
|
7,706
|
| Related Allowance |
3,328
|
|
2,144
|
| Average Recorded Investment |
13,254
|
|
14,160
|
| Interest Income Recognized |
186
|
|
821
|
|
Commercial and Industrial Loans [Member] | Secured By Real Estate [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
17,449
|
|
22,050
|
| Unpaid Principal Balance |
18,592
|
|
23,221
|
| With No Related Allowance Recorded |
15,575
|
|
9,520
|
| With an Allowance Recorded |
1,874
|
|
12,530
|
| Related Allowance |
425
|
|
2,319
|
| Average Recorded Investment |
17,513
|
|
21,894
|
| Interest Income Recognized |
313
|
|
1,723
|
|
Commercial and Industrial Loans [Member] | Commercial Lines of Credit [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
1,505
|
|
1,521
|
| Unpaid Principal Balance |
1,702
|
|
1,704
|
| With No Related Allowance Recorded |
1,505
|
|
848
|
| With an Allowance Recorded |
|
|
673
|
| Related Allowance |
|
|
230
|
| Average Recorded Investment |
1,512
|
|
1,688
|
| Interest Income Recognized |
15
|
|
64
|
|
Commercial and Industrial Loans [Member] | SBA Loans [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
6,517
|
|
6,170
|
| Unpaid Principal Balance |
10,101
|
|
10,244
|
| With No Related Allowance Recorded |
4,766
|
|
4,294
|
| With an Allowance Recorded |
1,750
|
|
1,876
|
| Related Allowance |
578
|
|
762
|
| Average Recorded Investment |
6,473
|
|
7,173
|
| Interest Income Recognized |
273
|
|
1,131
|
|
Commercial and Industrial Loans [Member] | International Loans [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
1,430
|
|
|
| Unpaid Principal Balance |
1,430
|
|
|
| With No Related Allowance Recorded |
859
|
|
|
| With an Allowance Recorded |
572
|
|
|
| Related Allowance |
57
|
|
|
| Average Recorded Investment |
1,498
|
|
|
| Interest Income Recognized |
|
|
|
|
Consumer Loans [Member] | Consumer Loans [Member]
|
|
|
|
| Financing Receivable, Impaired [Line Items] |
|
|
|
| Recorded Investment |
1,639
|
|
1,652
|
| Unpaid Principal Balance |
1,710
|
|
1,711
|
| With No Related Allowance Recorded |
391
|
|
449
|
| With an Allowance Recorded |
1,248
|
|
1,203
|
| Related Allowance |
401
|
|
615
|
| Average Recorded Investment |
1,643
|
|
1,205
|
| Interest Income Recognized |
$ 12
|
|
$ 73
|