Securities (Trading Securities (and Certain Trading Assets)) (Details) (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale		$ 38,300,000
Estimated fair value, available for sale	40,435,000us-gaap_AvailableForSaleSecurities	41,939,000us-gaap_AvailableForSaleSecurities
Amortized cost, held to maturity	80,653,000	84,506,000
Gross unrealized gains, held to maturity	1,276,000	1,146,000
Gross unrealized losses, held to maturity	450,000	737,000
Estimated fair value, held to maturity	81,479,000us-gaap_HeldToMaturitySecurities	84,915,000us-gaap_HeldToMaturitySecurities
Asset Backed Securities Issued By Others [Member] \| US Government Obligations [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, held to maturity	750,000	850,000
Estimated fair value, held to maturity	750,000	850,000
Asset Backed Securities Issued By Others [Member] \| Debt Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, held to maturity	79,903,000	83,656,000
Gross unrealized gains, held to maturity	1,276,000	1,146,000
Gross unrealized losses, held to maturity	450,000	737,000
Estimated fair value, held to maturity	80,729,000	84,065,000
Asset Backed Securities Issued By Others [Member] \| Residential Collateralized Mortgage Obligations [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, held to maturity	1,336,000	1,472,000
Gross unrealized losses, held to maturity	124,000	112,000
Estimated fair value, held to maturity	1,212,000	1,360,000
Asset-backed securities issued by GSEs [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	40,601,000	42,563,000
Gross unrealized gains, available for sale	273,000	206,000
Gross unrealized losses, available for sale	439,000	830,000
Estimated fair value, available for sale	40,435,000	41,939,000
Asset-backed securities issued by GSEs [Member] \| Bond Mutual Funds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	4,221,000	4,199,000
Gross unrealized gains, available for sale	162,000	122,000
Estimated fair value, available for sale	4,383,000	4,321,000
Asset-backed securities issued by GSEs [Member] \| Corporate Equity Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	37,000	37,000
Gross unrealized gains, available for sale	3,000	3,000
Estimated fair value, available for sale	40,000	40,000
Asset-backed securities issued by GSEs [Member] \| Residential Collateralized Mortgage Obligations [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	36,316,000	38,294,000
Gross unrealized gains, available for sale	104,000	77,000
Gross unrealized losses, available for sale	439,000	830,000
Estimated fair value, available for sale	35,981,000	37,541,000
Amortized cost, held to maturity	59,784,000	62,683,000
Gross unrealized gains, held to maturity	513,000	379,000
Gross unrealized losses, held to maturity	301,000	580,000
Estimated fair value, held to maturity	59,996,000	62,482,000
Asset-backed securities issued by GSEs [Member] \| Residential Mortgage Backed Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	27,000	33,000
Gross unrealized gains, available for sale	4,000	4,000
Estimated fair value, available for sale	31,000	37,000
Amortized cost, held to maturity	18,783,000	19,501,000
Gross unrealized gains, held to maturity	763,000	767,000
Gross unrealized losses, held to maturity	25,000	45,000
Estimated fair value, held to maturity	$ 19,521,000	$ 20,223,000

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

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