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Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Deferred tax assets: |  |
Allowance for loan losses | $ 19,438 | $ 23,956
Accumulated other comprehensive loss – Interest rate swap | 0 | 296
Accumulated other comprehensive loss – pension plan | 14,611 | 11,283
Intangible assets | 697 | 1,523
Deferred compensation | 3,750 | 3,733
OREO devaluations | 4,855 | 6,364
Partnership adjustments | 3,329 | 2,016
Other | 2,973 | 2,515
Loans held for sale fair value adjustment | 0 | 4,585
Tax credit carry-forwards | 0 | 1,269
Total deferred tax assets | 49,653 | 57,540
Deferred tax liabilities: |  |
Accumulated other comprehensive income – Unrealized gains on securities | 5,178 | 6,824
Deferred investment income | 10,199 | 10,199
Pension plan | 25,517 | 21,567
Mortgage servicing rights | 2,717 | 3,255
Other | 646 | 2,260
Total deferred tax liabilities | 44,257 | 44,105
Net deferred tax assets | $ 5,396 | $ 13,435

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