Premises and Equipment, Net (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 35,455,000us-gaap_PropertyPlantAndEquipmentGross	$ 37,385,000us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation	(17,351,000)	(17,368,000)
Total	18,104,000us-gaap_PropertyPlantAndEquipmentNet	20,017,000us-gaap_PropertyPlantAndEquipmentNet
Depreciation expense	1,500,000us-gaap_Depreciation	1,800,000us-gaap_Depreciation	1,800,000us-gaap_Depreciation
Future minimum rent commitments under various operating leases [Abstract]
2015	2,011,000
2016	1,713,000
2017	1,554,000
2018	1,502,000
2019	1,514,000
Thereafter	15,954,000
Net Total	24,248,000
Rent expense	2,800,000us-gaap_OperatingLeasesRentExpenseNet	3,700,000us-gaap_OperatingLeasesRentExpenseNet	3,600,000us-gaap_OperatingLeasesRentExpenseNet
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	1,858,000	2,370,000
Facilities [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	20,189,000	20,675,000
Furniture, Fixtures, and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	11,392,000	12,473,000
Construction in Process and Deposits on Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 2,016,000	$ 1,867,000

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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