Schedule of Financial Assets, Fair Value Hierarchy (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Fair Value Measured on Recurring Basis
Available-for-sale securities	$ 203,290	$ 234,381
U.S. Treasury securities \| Fair value measured on recurring basis
Fair Value Measured on Recurring Basis
Available-for-sale securities	17,363	15,414
U.S. Treasury securities \| Fair value measured on recurring basis \| Level 1
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
U.S. Treasury securities \| Fair value measured on recurring basis \| Level 2
Fair Value Measured on Recurring Basis
Available-for-sale securities	17,363	15,414
U.S. Treasury securities \| Fair value measured on recurring basis \| Level 3
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
GSE securities \| Fair value measured on recurring basis
Fair Value Measured on Recurring Basis
Available-for-sale securities	46,468	48,382
GSE securities \| Fair value measured on recurring basis \| Level 1
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
GSE securities \| Fair value measured on recurring basis \| Level 2
Fair Value Measured on Recurring Basis
Available-for-sale securities	46,468	48,382
GSE securities \| Fair value measured on recurring basis \| Level 3
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
Corporate bonds \| Fair value measured on recurring basis
Fair Value Measured on Recurring Basis
Available-for-sale securities		5,027
Corporate bonds \| Fair value measured on recurring basis \| Level 1
Fair Value Measured on Recurring Basis
Available-for-sale securities		0
Corporate bonds \| Fair value measured on recurring basis \| Level 2
Fair Value Measured on Recurring Basis
Available-for-sale securities		5,027
Corporate bonds \| Fair value measured on recurring basis \| Level 3
Fair Value Measured on Recurring Basis
Available-for-sale securities		0
Collateralized mortgage obligations \| Fair value measured on recurring basis
Fair Value Measured on Recurring Basis
Available-for-sale securities	67,066	70,884
Collateralized mortgage obligations \| Fair value measured on recurring basis \| Level 1
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
Collateralized mortgage obligations \| Fair value measured on recurring basis \| Level 2
Fair Value Measured on Recurring Basis
Available-for-sale securities	67,066	70,884
Collateralized mortgage obligations \| Fair value measured on recurring basis \| Level 3
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
Commercial mortgage-backed securities \| Fair value measured on recurring basis
Fair Value Measured on Recurring Basis
Available-for-sale securities	46,429	76,118
Commercial mortgage-backed securities \| Fair value measured on recurring basis \| Level 1
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
Commercial mortgage-backed securities \| Fair value measured on recurring basis \| Level 2
Fair Value Measured on Recurring Basis
Available-for-sale securities	46,429	76,118
Commercial mortgage-backed securities \| Fair value measured on recurring basis \| Level 3
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
GSE residential mortgage-backed securities \| Fair value measured on recurring basis
Fair Value Measured on Recurring Basis
Available-for-sale securities	2,368
GSE residential mortgage-backed securities \| Fair value measured on recurring basis \| Level 1
Fair Value Measured on Recurring Basis
Available-for-sale securities	0
GSE residential mortgage-backed securities \| Fair value measured on recurring basis \| Level 2
Fair Value Measured on Recurring Basis
Available-for-sale securities	2,368
GSE residential mortgage-backed securities \| Fair value measured on recurring basis \| Level 3
Fair Value Measured on Recurring Basis
Available-for-sale securities	0
Asset backed securities \| Fair value measured on recurring basis
Fair Value Measured on Recurring Basis
Available-for-sale securities	4,053
Asset backed securities \| Fair value measured on recurring basis \| Level 1
Fair Value Measured on Recurring Basis
Available-for-sale securities	0
Asset backed securities \| Fair value measured on recurring basis \| Level 2
Fair Value Measured on Recurring Basis
Available-for-sale securities	4,053
Asset backed securities \| Fair value measured on recurring basis \| Level 3
Fair Value Measured on Recurring Basis
Available-for-sale securities	0
Pooled trust preferred securities \| Fair value measured on recurring basis
Fair Value Measured on Recurring Basis
Available-for-sale securities	19,542	18,555
Pooled trust preferred securities \| Fair value measured on recurring basis \| Level 1
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
Pooled trust preferred securities \| Fair value measured on recurring basis \| Level 2
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
Pooled trust preferred securities \| Fair value measured on recurring basis \| Level 3
Fair Value Measured on Recurring Basis
Available-for-sale securities	19,542	18,555
GSE preferred stock \| Fair value measured on recurring basis
Fair Value Measured on Recurring Basis
Available-for-sale securities	1	1
GSE preferred stock \| Fair value measured on recurring basis \| Level 1
Fair Value Measured on Recurring Basis
Available-for-sale securities	1	1
GSE preferred stock \| Fair value measured on recurring basis \| Level 2
Fair Value Measured on Recurring Basis
Available-for-sale securities	0	0
GSE preferred stock \| Fair value measured on recurring basis \| Level 3
Fair Value Measured on Recurring Basis
Available-for-sale securities	$ 0	$ 0

For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Number 115

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-Name Statement of Financial Accounting Standard (FAS)

-Number 115

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Reference 10: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

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-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6379932&loc=d3e22054-111558

+ Details