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Deferred Tax Assets and Deferred Tax Liabilities (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Deferred tax assets |  |
Allowance for loan and lease losses | $ 50,652 | $ 50,963
Other real estate owned | 8,041 | 7,685
Deferred compensation | 4,837 | 3,129
Employee benefits | 3,132 | 2,715
Federal income tax credits | 2,778 | 3,543
Interest rate swap agreements | 0 | 6,549
Other | 7,813 | 7,835
Total gross deferred tax assets | 77,253 | 82,419
Deferred tax liabilities |  |
FHLB stock dividends | (10,359) | (10,143)
Deferred loan costs | (6,058) | (5,316)
Available-for-sale securities | (5,402) | (37,083)
Depreciation of premises and equipment | (3,939) | (5,437)
Intangibles | (3,099) | (1,117)
Interest rate swap agreements | (736) | 0
Other | (4,111) | (2,929)
Total gross deferred tax liabilities | (33,704) | (62,025)
Net deferred tax asset | $ 43,549 | $ 20,394

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