Securities - Summary of Securities that had Unrealized Losses (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	$ 26,360	$ 108,258
Less than 12 Months, Aggregate Losses	(137)	(7,690)
Twelve Months or Longer, Fair Value	99,809	35,909
Twelve Months or Longer, Unrealized Losses	(3,031)	(961)
Total, Fair Value	126,169	144,167
Total, Unrealized Losses	(3,168)	(8,651)
U.S. Government agencies and corporations
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	1,163	65,388
Less than 12 Months, Aggregate Losses	(2)	(6,463)
Twelve Months or Longer, Fair Value	58,167	0
Twelve Months or Longer, Unrealized Losses	(2,095)	0
Total, Fair Value	59,330	65,388
Total, Unrealized Losses	(2,097)	(6,463)
Mortgage backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	14,267	28,603
Less than 12 Months, Aggregate Losses	(72)	(566)
Twelve Months or Longer, Fair Value	33,545	31,051
Twelve Months or Longer, Unrealized Losses	(629)	(679)
Total, Fair Value	47,812	59,654
Total, Unrealized Losses	(701)	(1,245)
Residential collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	9,994	5,079
Less than 12 Months, Aggregate Losses	(58)	(59)
Twelve Months or Longer, Fair Value	4,016	4,411
Twelve Months or Longer, Unrealized Losses	(163)	(191)
Total, Fair Value	14,010	9,490
Total, Unrealized Losses	(221)	(250)
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	936	9,188
Less than 12 Months, Aggregate Losses	(5)	(602)
Twelve Months or Longer, Fair Value	4,081	447
Twelve Months or Longer, Unrealized Losses	(144)	(91)
Total, Fair Value	5,017	9,635
Total, Unrealized Losses	$ (149)	$ (693)