Investment Securities (Details) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2014 Label Security	Sep. 30, 2013 Security	Dec. 31, 2013
Available-for-sale Securities [Abstract]
Amortized Cost	$ 284,572,000		$ 341,828,000
Gross Unrealized Gains	6,589,000		5,576,000
Gross Unrealized Losses	2,764,000		5,739,000
Fair Value	288,397,000		341,665,000	[1]
Held-to-maturity [Abstract]
Amortized Cost	145,030,000		155,523,000	[1]
Gross Unrealized Gains	967,000		289,000
Gross Unrealized Losses	1,400,000		4,644,000
Fair Value	144,597,000		151,168,000
Number of Private label Collateralized Mortgage Obligations	3
Combined balance of private-label collateralized mortgage obligations	47,000
Available-for-sale, Amortized Cost [Abstract]
Due in one year or less	8,533,000
Due after one year through five years	32,867,000
Due after five years through ten years	13,969,000
Due after ten years	3,102,000
Other asset-backed securities	24,406,000
Mortgage-backed securities and collateralized mortgage obligations: Residential, Amortized Cost	175,428,000
Mortgage-backed securities and collateralized mortgage obligations: Commercial, Amortized Cost	25,803,000
Collateralized debt obligation	464,000
Amortized Cost	284,572,000		341,828,000
Available-for-sale, Fair Value [Abstract]
Due in one year or less	8,625,000
Due after one year through five years	33,763,000
Due after five years through ten years	14,631,000
Due after ten years	3,120,000
Other asset-backed securities	24,817,000
Mortgage-backed securities and collateralized mortgage obligations: Residential, Fair Value	176,019,000
Mortgage-backed securities and collateralized mortgage obligations: Commercial, Fair Value	25,994,000
Collateralized debt obligation	1,428,000
Fair Value	288,397,000		341,665,000	[1]
Held-to-maturity, Amortized Cost [Abstract]
Due in one year or less	106,000
Due after one year through five years	3,105,000
Due after five years through ten years	7,829,000
Due after ten years	35,568,000
Mortgage-backed securities and collateralized mortgage obligations: Residential, Amortized Cost	82,992,000
Mortgage-backed securities and collateralized mortgage obligations: Commercial, Amortized Cost	15,430,000
Amortized Cost	145,030,000		155,523,000	[1]
Held-to-maturity, Fair Value [Abstract]
Due in one year or less	105,000
Due after one year through five years	3,130,000
Due after five years through ten years	7,787,000
Due after ten years	35,465,000
Mortgage-backed securities and collateralized mortgage obligations: Residential, Fair Value	82,748,000
Mortgage-backed securities and collateralized mortgage obligations: Commercial, Fair Value	15,362,000
Held-to-maturity securities, Fair Value	144,597,000		151,168,000
Available-for-sale [Abstract]
Securities with losses under 12 months, Fair Value, Available-for-sale	15,356,000		157,103,000
Securities with losses under 12 months, Gross Unrealized Loss, Available-for-sale	84,000		5,408,000
Securities with losses over 12 months, Fair Value, Available-for-sale	94,016,000		4,371,000
Securities with losses over 12 months, Gross Unrealized Loss, Available-for-sale	2,680,000		331,000
Total securities, Fair Value, Available-for-sale	109,372,000		161,474,000
Total securities, Gross Unrealized Loss, Available-for-sale	2,764,000		5,739,000
Held-to-maturity [Abstract]
Securities with losses under 12 months, Fair Value, Held-to-maturity	15,580,000		86,498,000
Securities with losses under 12 months, Gross Unrealized Loss, Held-to-maturity	160,000		4,627,000
Securities with losses over 12 months, Fair Value, Held-to-maturity	62,235,000		685,000
Securities with losses over 12 months, Gross Unrealized Loss, Held-to-maturity	1,240,000		17,000
Total securities, Fair Value, Held-to-maturity	77,815,000		87,183,000
Total securities, Gross Unrealized Loss, Held-to-maturity	1,400,000		4,644,000
Number of available-for-sale and held-to-maturity securities in unrealized loss positions	74
Unrealized losses as a percentage of individual securities' amortized cost basis (in hundredths)	2.18%
Unrealized losses as a percentage of the Company's total amortized cost basis (in hundredths)	0.97%
Number of available-for-sale securities in continuous loss position	62
Unamortized cost basis of securities in a continuous loss position	160,100,000
Unrealized loss on securities in a continuous loss position	3,900,000
Number of impairment related to credit quality	0
Number of impaired securities evaluated as other temporary	0
Impairment losses recognized on debt securities	0
Number of available-for-sale securities sold	4	33
Available-for-sale securities, net gain	128,000	229,000
Number of available-for-sale securities sold with gains	4	29
Available-for-sale securities, gross realized gains	128,000	242,000
Number of available-for-sale securities sold with loss		4
Available-for-sale securities, gross realized losses		13,000
Securities pledged to secure public funds on deposits and for other purposes required or permitted by law	276,700,000		259,900,000
U.S. Government Sponsored Enterprises [Member]
Available-for-sale Securities [Abstract]
Amortized Cost	10,418,000		11,455,000
Gross Unrealized Gains	0		1,000
Gross Unrealized Losses	126,000		191,000
Fair Value	10,292,000		11,265,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	10,418,000		11,455,000
Available-for-sale, Fair Value [Abstract]
Fair Value	10,292,000		11,265,000
Available-for-sale [Abstract]
Securities with losses under 12 months, Fair Value, Available-for-sale	0		10,463,000
Securities with losses under 12 months, Gross Unrealized Loss, Available-for-sale	0		191,000
Securities with losses over 12 months, Fair Value, Available-for-sale	10,292,000		0
Securities with losses over 12 months, Gross Unrealized Loss, Available-for-sale	126,000		0
Total securities, Fair Value, Available-for-sale	10,292,000		10,463,000
Total securities, Gross Unrealized Loss, Available-for-sale	126,000		191,000
Obligation of State and Political Subdivisions [Member]
Available-for-sale Securities [Abstract]
Amortized Cost	48,053,000		57,925,000
Gross Unrealized Gains	1,820,000		2,296,000
Gross Unrealized Losses	26,000		243,000
Fair Value	49,847,000		59,978,000
Held-to-maturity [Abstract]
Amortized Cost	46,608,000		47,377,000
Gross Unrealized Gains	203,000		38,000
Gross Unrealized Losses	324,000		2,586,000
Fair Value	46,487,000		44,829,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	48,053,000		57,925,000
Available-for-sale, Fair Value [Abstract]
Fair Value	49,847,000		59,978,000
Held-to-maturity, Amortized Cost [Abstract]
Amortized Cost	46,608,000		47,377,000
Held-to-maturity, Fair Value [Abstract]
Held-to-maturity securities, Fair Value	46,487,000		44,829,000
Available-for-sale [Abstract]
Securities with losses under 12 months, Fair Value, Available-for-sale	0		4,256,000
Securities with losses under 12 months, Gross Unrealized Loss, Available-for-sale	0		243,000
Securities with losses over 12 months, Fair Value, Available-for-sale	3,739,000		0
Securities with losses over 12 months, Gross Unrealized Loss, Available-for-sale	26,000		0
Total securities, Fair Value, Available-for-sale	3,739,000		4,256,000
Total securities, Gross Unrealized Loss, Available-for-sale	26,000		243,000
Held-to-maturity [Abstract]
Securities with losses under 12 months, Fair Value, Held-to-maturity	7,808,000		42,246,000
Securities with losses under 12 months, Gross Unrealized Loss, Held-to-maturity	43,000		2,569,000
Securities with losses over 12 months, Fair Value, Held-to-maturity	21,085,000		685,000
Securities with losses over 12 months, Gross Unrealized Loss, Held-to-maturity	281,000		17,000
Total securities, Fair Value, Held-to-maturity	28,893,000		42,931,000
Total securities, Gross Unrealized Loss, Held-to-maturity	324,000		2,586,000
GSE Mortgage-Backed Securities [Member]
Available-for-sale Securities [Abstract]
Amortized Cost	110,482,000		146,129,000
Gross Unrealized Gains	2,787,000		2,029,000
Gross Unrealized Losses	623,000		2,193,000
Fair Value	112,646,000		145,965,000
Held-to-maturity [Abstract]
Amortized Cost	69,886,000		78,272,000
Gross Unrealized Gains	715,000		148,000
Gross Unrealized Losses	412,000		1,079,000
Fair Value	70,189,000		77,341,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	110,482,000		146,129,000
Available-for-sale, Fair Value [Abstract]
Fair Value	112,646,000		145,965,000
Held-to-maturity, Amortized Cost [Abstract]
Amortized Cost	69,886,000		78,272,000
Held-to-maturity, Fair Value [Abstract]
Held-to-maturity securities, Fair Value	70,189,000		77,341,000
Available-for-sale [Abstract]
Securities with losses under 12 months, Fair Value, Available-for-sale	10,873,000		68,028,000
Securities with losses under 12 months, Gross Unrealized Loss, Available-for-sale	68,000		2,193,000
Securities with losses over 12 months, Fair Value, Available-for-sale	32,344,000		0
Securities with losses over 12 months, Gross Unrealized Loss, Available-for-sale	555,000		0
Total securities, Fair Value, Available-for-sale	43,217,000		68,028,000
Total securities, Gross Unrealized Loss, Available-for-sale	623,000		2,193,000
Held-to-maturity [Abstract]
Securities with losses under 12 months, Fair Value, Held-to-maturity	0		31,042,000
Securities with losses under 12 months, Gross Unrealized Loss, Held-to-maturity	0		1,079,000
Securities with losses over 12 months, Fair Value, Held-to-maturity	28,591,000		0
Securities with losses over 12 months, Gross Unrealized Loss, Held-to-maturity	412,000		0
Total securities, Fair Value, Held-to-maturity	28,591,000		31,042,000
Total securities, Gross Unrealized Loss, Held-to-maturity	412,000		1,079,000
Collateralized Mortgage Obligations: Residential [Member]
Available-for-sale Securities [Abstract]
Amortized Cost	64,946,000		73,569,000
Gross Unrealized Gains	299,000		212,000
Gross Unrealized Losses	1,872,000		2,894,000
Fair Value	63,373,000		70,887,000
Held-to-maturity [Abstract]
Amortized Cost	13,106,000		14,189,000
Gross Unrealized Gains	0		0
Gross Unrealized Losses	547,000		979,000
Fair Value	12,559,000		13,210,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	64,946,000		73,569,000
Available-for-sale, Fair Value [Abstract]
Fair Value	63,373,000		70,887,000
Held-to-maturity, Amortized Cost [Abstract]
Amortized Cost	13,106,000		14,189,000
Held-to-maturity, Fair Value [Abstract]
Held-to-maturity securities, Fair Value	12,559,000		13,210,000
Available-for-sale [Abstract]
Securities with losses under 12 months, Fair Value, Available-for-sale	4,483,000		56,975,000
Securities with losses under 12 months, Gross Unrealized Loss, Available-for-sale	16,000		2,563,000
Securities with losses over 12 months, Fair Value, Available-for-sale	43,689,000		4,371,000
Securities with losses over 12 months, Gross Unrealized Loss, Available-for-sale	1,856,000		331,000
Total securities, Fair Value, Available-for-sale	48,172,000		61,346,000
Total securities, Gross Unrealized Loss, Available-for-sale	1,872,000		2,894,000
Held-to-maturity [Abstract]
Securities with losses under 12 months, Fair Value, Held-to-maturity	0		13,210,000
Securities with losses under 12 months, Gross Unrealized Loss, Held-to-maturity	0		979,000
Securities with losses over 12 months, Fair Value, Held-to-maturity	12,559,000		0
Securities with losses over 12 months, Gross Unrealized Loss, Held-to-maturity	547,000		0
Total securities, Fair Value, Held-to-maturity	12,559,000		13,210,000
Total securities, Gross Unrealized Loss, Held-to-maturity	547,000		979,000
Collateralized Mortgage Obligations: Commercial [Member]
Available-for-sale Securities [Abstract]
Amortized Cost	25,803,000		27,082,000
Gross Unrealized Gains	308,000		416,000
Gross Unrealized Losses	117,000		152,000
Fair Value	25,994,000		27,346,000
Held-to-maturity [Abstract]
Amortized Cost	15,430,000		15,685,000
Gross Unrealized Gains	49,000		103,000
Gross Unrealized Losses	117,000		0
Fair Value	15,362,000		15,788,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	25,803,000		27,082,000
Available-for-sale, Fair Value [Abstract]
Fair Value	25,994,000		27,346,000
Held-to-maturity, Amortized Cost [Abstract]
Amortized Cost	15,430,000		15,685,000
Held-to-maturity, Fair Value [Abstract]
Held-to-maturity securities, Fair Value	15,362,000		15,788,000
Available-for-sale [Abstract]
Securities with losses under 12 months, Fair Value, Available-for-sale	0		4,282,000
Securities with losses under 12 months, Gross Unrealized Loss, Available-for-sale	0		152,000
Securities with losses over 12 months, Fair Value, Available-for-sale	3,952,000		0
Securities with losses over 12 months, Gross Unrealized Loss, Available-for-sale	117,000		0
Total securities, Fair Value, Available-for-sale	3,952,000		4,282,000
Total securities, Gross Unrealized Loss, Available-for-sale	117,000		152,000
Held-to-maturity [Abstract]
Securities with losses under 12 months, Fair Value, Held-to-maturity	7,772,000
Securities with losses under 12 months, Gross Unrealized Loss, Held-to-maturity	117,000
Securities with losses over 12 months, Fair Value, Held-to-maturity	0
Securities with losses over 12 months, Gross Unrealized Loss, Held-to-maturity	0
Total securities, Fair Value, Held-to-maturity	7,772,000
Total securities, Gross Unrealized Loss, Held-to-maturity	117,000
Other Asset-Backed Securities [Member]
Available-for-sale Securities [Abstract]
Amortized Cost	24,406,000		25,204,000
Gross Unrealized Gains	411,000		351,000
Gross Unrealized Losses	0		66,000
Fair Value	24,817,000		25,489,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	24,406,000		25,204,000
Available-for-sale, Fair Value [Abstract]
Fair Value	24,817,000		25,489,000
Available-for-sale [Abstract]
Securities with losses under 12 months, Fair Value, Available-for-sale			13,099,000
Securities with losses under 12 months, Gross Unrealized Loss, Available-for-sale			66,000
Securities with losses over 12 months, Fair Value, Available-for-sale			0
Securities with losses over 12 months, Gross Unrealized Loss, Available-for-sale			0
Total securities, Fair Value, Available-for-sale			13,099,000
Total securities, Gross Unrealized Loss, Available-for-sale			66,000
Collateralized Debt Obligations [Member]
Available-for-sale Securities [Abstract]
Amortized Cost	464,000		464,000
Gross Unrealized Gains	964,000		271,000
Gross Unrealized Losses	0		0
Fair Value	1,428,000		735,000
Available-for-sale, Amortized Cost [Abstract]
Amortized Cost	464,000		464,000
Available-for-sale, Fair Value [Abstract]
Fair Value	$ 1,428,000		$ 735,000

[1] Derived from audited financial statements.