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Segment Information - Schedule of Operating Results by Segment (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | $ 235,315 | $ 273,234 |  | $ 274,044
Provision for loan losses | 35,419 | 63,272 |  | 87,080
Other income (loss) | 92,403 | 94,910 |  | 74,880
Other expense | 187,968 | 188,317 |  | 187,107
Income (loss) before taxes | 104,331 | 116,555 |  | 74,737
Income before income taxes | 104,331 | 116,555 |  | 74,737
Income taxes (benefit) | 25,701 | 34,415 |  | 16,636
Net income | 78,630 | 82,140 |  | 58,101
Assets | 6,642,803 | 6,972,245 |  | 7,282,261
Assets held for sale (1) |  | 382,462 | [1] |
Loans | 4,450,322 | 4,317,099 |  | 4,732,685
Total loans | 4,450,322 | 4,317,099 |  | 4,732,685
Deposits | 4,716,032 | 4,465,114 |  | 5,095,420
Liabilities held for sale (2) |  | 536,186 | [2] |
PNB |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 221,758 | 236,282 |  | 237,281
Provision for loan losses | 16,678 | 30,220 |  | 23,474
Other income (loss) | 70,739 | 90,982 |  | 80,512
Other expense | 156,516 | 146,235 |  | 144,051
Income (loss) before taxes | 119,303 | 150,809 |  | 150,268
Income before income taxes | 119,303 | 150,809 |  | 150,268
Income taxes (benefit) | 32,197 | 43,958 |  | 47,320
Net income | 87,106 | 106,851 |  | 102,948
Assets | 6,502,579 | 6,281,747 |  | 6,495,558
Assets held for sale (1) |  | 0 | [1] |
Loans | 4,369,173 | 4,172,424 |  | 4,074,775
Total loans | 4,369,173 | 4,172,424 |  | 4,074,775
Deposits | 4,814,107 | 4,611,646 |  | 4,622,693
Liabilities held for sale (2) |  | 0 | [2] |
VB |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 0 | 27,078 |  | 27,867
Provision for loan losses | 0 | 31,052 |  | 61,407
Other income (loss) | 0 | 6,617 |  | (6,024)
Other expense | 0 | 31,379 |  | 31,623
Income (loss) before taxes | 0 | (28,736) |  | (71,187)
Income before income taxes | 0 | (28,736) |  | (71,187)
Income taxes (benefit) | 0 | (6,210) |  | (25,773)
Net income | 0 | (22,526) |  | (45,414)
Assets | 0 | 650,935 |  | 791,945
Assets held for sale (1) |  | 382,462 | [1] |
Loans | 0 | 123,883 |  | 640,580
Total loans | 0 | 123,883 |  | 640,580
Deposits | 0 | 32 |  | 633,432
Liabilities held for sale (2) |  | 536,186 | [2] |
GFSC |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 9,156 | 8,693 |  | 7,611
Provision for loan losses | 859 | 2,000 |  | 2,199
Other income (loss) | 0 | 0 |  | 2
Other expense | 2,835 | 2,506 |  | 2,326
Income (loss) before taxes | 5,462 | 4,187 |  | 3,088
Income before income taxes | 5,462 | 4,187 |  | 3,088
Income taxes (benefit) | 1,912 | 1,466 |  | 1,082
Net income | 3,550 | 2,721 |  | 2,006
Assets | 49,926 | 46,682 |  | 43,209
Assets held for sale (1) |  | 0 | [1] |
Loans | 50,082 | 47,111 |  | 43,714
Total loans | 50,082 | 47,111 |  | 43,714
Deposits | 8,358 | 8,013 |  | 7,062
Liabilities held for sale (2) |  | 0 | [2] |
SEPH |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | (341) | (974) |  | 0
Provision for loan losses | 17,882 | 0 |  | 0
Other income (loss) | 21,431 | (3,039) |  | 0
Other expense | 22,032 | 1,082 |  | 0
Income (loss) before taxes | (18,824) | (5,095) |  | 0
Income before income taxes | (18,824) | (5,095) |  | 0
Income taxes (benefit) | (6,603) | (1,784) |  | 0
Net income | (12,221) | (3,311) |  | 0
Assets | 104,428 | 34,989 |  | 0
Assets held for sale (1) |  | 0 | [1] |
Loans | 59,178 | 0 |  | 0
Total loans | 59,178 | 0 |  | 0
Deposits | 0 | 0 |  | 0
Liabilities held for sale (2) |  | 0 | [2] |
All Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net interest income | 4,742 | 2,155 |  | 1,285
Provision for loan losses | 0 | 0 |  | 0
Other income (loss) | 233 | 350 |  | 390
Other expense | 6,585 | 7,115 |  | 9,107
Income (loss) before taxes | (1,610) | (4,610) |  | (7,432)
Income before income taxes | (1,610) | (4,610) |  | (7,432)
Income taxes (benefit) | (1,805) | (3,015) |  | (5,993)
Net income | 195 | (1,595) |  | (1,439)
Assets | (14,130) | (42,108) |  | (48,451)
Assets held for sale (1) |  | 0 | [1] |
Loans | (28,111) | (26,319) |  | (26,384)
Total loans | (28,111) | (26,319) |  | (26,384)
Deposits | (106,433) | (154,577) |  | (167,767)
Liabilities held for sale (2) |  | $ 0 | [2] |
[1] | The assets held for sale represent the loans and other assets at Vision Bank that were sold in the first quarter of 2012.
[2] | The liabilities held for sale represent the deposits and other liabilities at Vision Bank that were sold in the first quarter of 2012.

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