Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Tax effect of net unrealized loss on securities available for sale reflected in stockholders’ equity	$ 0	$ 9,766
Tax effect of net unrealized loss on derivatives reflected in stockholders’ equity	1,162	1,270
Securities	35us-gaap_DeferredTaxAssetsInvestments	1,257us-gaap_DeferredTaxAssetsInvestments
Allowance for loan and lease losses	15,346	15,766
Deferred compensation	6,384	4,674
Organization and acquisitions costs	366	393
Net operating loss carryforwards	5,149	4,463
Non-accrual loan interest	691	830
OREO writedowns	1,106	1,781
Rehab tax credit projects	3,547	2,438
Mortgage repurchase obligation	330	882
Self-funded health plan	578	0
Other	183us-gaap_DeferredTaxAssetsOther	778us-gaap_DeferredTaxAssetsOther
Gross deferred tax assets	34,877us-gaap_DeferredTaxAssetsGross	44,298us-gaap_DeferredTaxAssetsGross
Valuation allowance	(6,333)	(4,615)
Total deferred tax assets	28,544us-gaap_DeferredTaxAssetsNet	39,683us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities:
Tax effect of net unrealized gain on securities available for sale reflected in stockholders’ equity	(2,427)	0
Premises, furniture and equipment	(8,569)	(8,660)
Tax bad debt reserves	(21)	(523)
Purchase accounting	(5,787)	(5,323)
Prepaid expenses	(514)	(621)
Mortgage servicing rights	(10,355)	(8,996)
Deferred loan fees	(1,267)	(75)
Other	(375)us-gaap_DeferredTaxLiabilitiesOther	(324)us-gaap_DeferredTaxLiabilitiesOther
Gross deferred tax liabilities	(29,315)us-gaap_DeferredIncomeTaxLiabilities	(24,522)us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax asset (liability)	$ (771)us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 15,161us-gaap_DeferredTaxAssetsLiabilitiesNet

Deferred Tax Assets, Mortgage Repurchase Obligation

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Deferred Tax Assets, Organization and Acquisition Costs

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Deferred Tax Assets, Tax Deferred Expense, Write-down of Other Real Estate Owned

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Deferred Tax Liabilities, Unrealized Gains on Available-for-Sale Securities

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated losses under self insurance.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses on available-for-sale securities.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from deferred financing costs.

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Amount of deferred tax liability attributable to taxable temporary differences from mortgage servicing rights.

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Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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