Securities (Trading Securities (and Certain Trading Assets)) (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Schedule of Trading Securities and Other Trading Assets [Line Items]
Estimated fair value, available for sale	$ 43,378,000	$ 48,247,000
Amortized cost, held to maturity	76,851,000	86,401,000
Gross unrealized gains, held to maturity	1,176,000	1,004,000
Gross unrealized losses, held to maturity	946,000	1,314,000
Estimated fair value, held to maturity	77,081,000	86,091,000
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	750,000
Estimated fair value, held to maturity	750,000	750,000
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	76,101,000	85,651,000
Gross unrealized gains, held to maturity	1,176,000	1,004,000
Gross unrealized losses, held to maturity	946,000	1,314,000
Estimated fair value, held to maturity	76,331,000	85,341,000
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	2,343,000	3,120,000
Gross unrealized gains, held to maturity	143,000	114,000
Gross unrealized losses, held to maturity	109,000	157,000
Estimated fair value, held to maturity	2,377,000	3,077,000
Asset-backed securities issued by GSEs [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized cost, available for sale	44,385,000	49,620,000
Gross unrealized gains, available for sale	133,000	106,000
Gross unrealized losses, available for sale	1,140,000	1,479,000
Estimated fair value, available for sale	43,378,000	48,247,000
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	4,174,000	4,108,000
Gross unrealized gains, available for sale	87,000	22,000
Estimated fair value, available for sale	4,261,000	4,130,000
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	4,000
Estimated fair value, available for sale	40,000	41,000
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	40,136,000	45,299,000
Gross unrealized gains, available for sale	37,000	63,000
Gross unrealized losses, available for sale	1,140,000	1,479,000
Estimated fair value, available for sale	39,033,000	43,883,000
Amortized cost, held to maturity	53,587,000	59,869,000
Gross unrealized gains, held to maturity	337,000	265,000
Gross unrealized losses, held to maturity	745,000	943,000
Estimated fair value, held to maturity	53,179,000	59,191,000
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	38,000	176,000
Gross unrealized gains, available for sale	6,000	17,000
Estimated fair value, available for sale	44,000	193,000
Amortized cost, held to maturity	20,171,000	22,662,000
Gross unrealized gains, held to maturity	696,000	625,000
Gross unrealized losses, held to maturity	92,000	214,000
Estimated fair value, held to maturity	$ 20,775,000	$ 23,073,000