Investments (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014 Security	Sep. 30, 2013	Sep. 30, 2014 Security	Sep. 30, 2013	Dec. 31, 2013
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]
Amortized Cost	$ 304,336,000		$ 304,336,000		$ 317,463,000
Gross Unrealized Gains	5,670,000		5,670,000		4,538,000
Gross Unrealized Losses	(1,723,000)		(1,723,000)		(4,700,000)
Fair Value	308,283,000		308,283,000		317,301,000
Number of securities owned with fair value than cost	76		76
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than Twelve Months, Fair Value	55,138,000		55,138,000		163,889,000
Twelve Months or Greater, Fair Value	78,870,000		78,870,000		12,731,000
Total, Fair Value	134,008,000		134,008,000		176,620,000
Less than Twelve Months, Gross Unrealized Losses			(247,000)		(4,014,000)
Twelve Months or Greater, Gross Unrealized Losses			(1,476,000)		(686,000)
Total, Gross Unrealized Losses			(1,723,000)		(4,700,000)
Duration securities impaired, Minimum			1 year
Proceeds from sale of securities available-for-sale	5,187,000	121,000	17,338,000	15,894,000
Realized investment gains (losses) [Abstract]
Gross gains	242,000	91,000	488,000	525,000
Gross losses	0	0	0	(140,000)
Net gains	242,000	91,000	488,000	385,000
Investment securities pledged as collateral	189,100,000		189,100,000		194,700,000
Amortized Cost [Abstract]
Due in one year or less	11,726,000		11,726,000
Due after one year through five years	129,401,000		129,401,000
Due after five years through ten years	61,345,000		61,345,000
Due after ten years	100,728,000		100,728,000
Total	303,200,000		303,200,000
Fair Value [Abstract]
Due in one year or less	11,879,000		11,879,000
Due after one year through five years	129,523,000		129,523,000
Due after five years through ten years	61,461,000		61,461,000
Due after ten years	103,657,000		103,657,000
Total	306,520,000		306,520,000
U.S. Agency Securities [Member]
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]
Amortized Cost	146,993,000		146,993,000		153,896,000
Gross Unrealized Gains	503,000		503,000		702,000
Gross Unrealized Losses	(1,011,000)		(1,011,000)		(2,409,000)
Fair Value	146,485,000		146,485,000		152,189,000
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than Twelve Months, Fair Value	49,419,000		49,419,000		98,356,000
Twelve Months or Greater, Fair Value	43,395,000		43,395,000		2,825,000
Total, Fair Value	92,814,000		92,814,000		101,181,000
Less than Twelve Months, Gross Unrealized Losses			(202,000)		(2,212,000)
Twelve Months or Greater, Gross Unrealized Losses			(809,000)		(197,000)
Total, Gross Unrealized Losses			(1,011,000)		(2,409,000)
US Treasury Securities [Member]
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]
Amortized Cost	11,873,000		11,873,000		11,856,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	(343,000)		(343,000)		(547,000)
Fair Value	11,530,000		11,530,000		11,309,000
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than Twelve Months, Fair Value	0		0		11,309,000
Twelve Months or Greater, Fair Value	11,530,000		11,530,000		0
Total, Fair Value	11,530,000		11,530,000		11,309,000
Less than Twelve Months, Gross Unrealized Losses			0		(547,000)
Twelve Months or Greater, Gross Unrealized Losses			(343,000)		0
Total, Gross Unrealized Losses			(343,000)		(547,000)
Obligations of State and Political Subdivisions [Member]
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]
Amortized Cost	96,830,000		96,830,000		94,113,000
Gross Unrealized Gains	3,784,000		3,784,000		2,146,000
Gross Unrealized Losses	(191,000)		(191,000)		(1,254,000)
Fair Value	100,423,000		100,423,000		95,005,000
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than Twelve Months, Fair Value	2,324,000		2,324,000		24,201,000
Twelve Months or Greater, Fair Value	11,431,000		11,431,000		6,491,000
Total, Fair Value	13,755,000		13,755,000		30,692,000
Less than Twelve Months, Gross Unrealized Losses			(18,000)		(865,000)
Twelve Months or Greater, Gross Unrealized Losses			(173,000)		(389,000)
Total, Gross Unrealized Losses			(191,000)		(1,254,000)
Corporate Obligations [Member]
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]
Amortized Cost	13,923,000		13,923,000		16,651,000
Gross Unrealized Gains	250,000		250,000		341,000
Gross Unrealized Losses	(73,000)		(73,000)		(190,000)
Fair Value	14,100,000		14,100,000		16,802,000
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than Twelve Months, Fair Value	505,000		505,000		6,103,000
Twelve Months or Greater, Fair Value	7,781,000		7,781,000		2,251,000
Total, Fair Value	8,286,000		8,286,000		8,354,000
Less than Twelve Months, Gross Unrealized Losses			(2,000)		(124,000)
Twelve Months or Greater, Gross Unrealized Losses			(71,000)		(66,000)
Total, Gross Unrealized Losses			(73,000)		(190,000)
Mortgage-backed Securities in Government Sponsored Entities [Member]
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]
Amortized Cost	33,581,000		33,581,000		40,405,000
Gross Unrealized Gains	486,000		486,000		566,000
Gross Unrealized Losses	(85,000)		(85,000)		(300,000)
Fair Value	33,982,000		33,982,000		40,671,000
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than Twelve Months, Fair Value	2,309,000		2,309,000		23,920,000
Twelve Months or Greater, Fair Value	4,733,000		4,733,000		1,164,000
Total, Fair Value	7,042,000		7,042,000		25,084,000
Less than Twelve Months, Gross Unrealized Losses			(5,000)		(266,000)
Twelve Months or Greater, Gross Unrealized Losses			(80,000)		(34,000)
Total, Gross Unrealized Losses			(85,000)		(300,000)
Equity Securities in Financial Institutions [Member]
Available for Sale Securities Amortized Cost, Gross Unrealized Gains or Losses and Fair Value [Abstract]
Amortized Cost	1,136,000		1,136,000		542,000
Gross Unrealized Gains	647,000		647,000		783,000
Gross Unrealized Losses	(20,000)		(20,000)		0
Fair Value	1,763,000		1,763,000		1,325,000
Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract]
Less than Twelve Months, Fair Value	581,000		581,000
Twelve Months or Greater, Fair Value	0		0
Total, Fair Value	581,000		581,000
Less than Twelve Months, Gross Unrealized Losses			(20,000)
Twelve Months or Greater, Gross Unrealized Losses			0
Total, Gross Unrealized Losses			$ (20,000)