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Income Taxes (Reconciliation of Expected Income Tax Benefit Computed Using Federal Statutory Income Tax Rate) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2014
|
Sep. 30, 2014
|
Jun. 30, 2014
|
Mar. 31, 2014
|
Dec. 31, 2013
|
Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Income Tax Disclosure [Abstract] | |||||||||||
| Computed tax expense | $ 12,604 | $ 12,220 | $ 12,008 | ||||||||
| Tax exempt income | (704) | (510) | (623) | ||||||||
| Income from life insurance | (503) | (459) | (484) | ||||||||
| State taxes, net of federal benefit | 328 | 260 | 297 | ||||||||
| Low income housing credits | (286) | (299) | (328) | ||||||||
| Goodwill impairment | 0 | 991 | 0 | ||||||||
| Other | 1 | (71) | 12 | ||||||||
| Income tax expense | $ 2,523 | $ 3,154 | $ 3,001 | $ 2,762 | $ 3,560 | $ 2,952 | $ 2,952 | $ 2,668 | $ 11,440 | $ 12,132 | $ 10,882 |
| Income tax rate used for calculations | 35.00% | 35.00% | |||||||||