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Portfolio Loans Not Covered by Loss Share ("Non-covered") - Summary of Aging of Recorded Investment in Past Due Non-covered Loans by Portfolio Class and Category (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Financing Receivable, Recorded Investment, Past Due [Line Items] | ||
| Total | $ 2,085,872 | $ 2,106,039 |
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Non-Covered Loans
|
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| Financing Receivable, Recorded Investment, Past Due [Line Items] | ||
| 30-89 Days Past Due | 5,032 | 3,217 |
| 90 or More Days Past Due | 16,191 | 8,278 |
| Total Past Due | 21,223 | 11,495 |
| Current | 2,064,649 | 2,094,544 |
| Total | 2,085,428 | 2,106,028 |
| Total | 2,085,872 | 2,106,039 |
|
Non-Covered Loans | Commercial & Industrial
|
||
| Financing Receivable, Recorded Investment, Past Due [Line Items] | ||
| 30-89 Days Past Due | 1,414 | 14 |
| 90 or More Days Past Due | 0 | 0 |
| Total Past Due | 1,414 | 14 |
| Current | 947,757 | 962,870 |
| Total | 949,171 | 962,884 |
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Non-Covered Loans | Real Estate
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| Financing Receivable, Recorded Investment, Past Due [Line Items] | ||
| Total | 1,116,538 | 1,126,178 |
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Non-Covered Loans | Real Estate | Commercial - Owner Occupied
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| Financing Receivable, Recorded Investment, Past Due [Line Items] | ||
| 30-89 Days Past Due | 2,018 | 1,352 |
| 90 or More Days Past Due | 1,307 | 2,081 |
| Total Past Due | 3,325 | 3,433 |
| Current | 335,761 | 329,809 |
| Total | 339,086 | 333,242 |
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Non-Covered Loans | Real Estate | Commercial - Investor Owned
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| Financing Receivable, Recorded Investment, Past Due [Line Items] | ||
| 30-89 Days Past Due | 1,179 | 0 |
| 90 or More Days Past Due | 11,678 | 4,045 |
| Total Past Due | 12,857 | 4,045 |
| Current | 460,146 | 482,422 |
| Total | 473,003 | 486,467 |
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Non-Covered Loans | Real Estate | Construction and Land Development
|
||
| Financing Receivable, Recorded Investment, Past Due [Line Items] | ||
| 30-89 Days Past Due | 343 | 1,201 |
| 90 or More Days Past Due | 2,524 | 1,559 |
| Total Past Due | 2,867 | 2,760 |
| Current | 153,354 | 158,151 |
| Total | 156,221 | 160,911 |
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Non-Covered Loans | Real Estate | Residential
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| Financing Receivable, Recorded Investment, Past Due [Line Items] | ||
| 30-89 Days Past Due | 78 | 616 |
| 90 or More Days Past Due | 682 | 593 |
| Total Past Due | 760 | 1,209 |
| Current | 147,468 | 144,349 |
| Total | 148,228 | 145,558 |
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Non-Covered Loans | Consumer & Other
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| Financing Receivable, Recorded Investment, Past Due [Line Items] | ||
| 30-89 Days Past Due | 0 | 34 |
| 90 or More Days Past Due | 0 | 0 |
| Total Past Due | 0 | 34 |
| Current | 20,163 | 16,943 |
| Total | 19,719 | 16,966 |
| Total | $ 20,163 | $ 16,977 |