Securities - Summary of Securities that had Unrealized Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	$ 101,881	$ 108,258
Less than 12 Months, Aggregate Losses	(4,261)	(7,690)
Twelve Months or Longer, Fair Value	38,809	35,909
Twelve Months or Longer, Unrealized Losses	(1,680)	(961)
Total, Fair Value	140,690	144,167
Total, Unrealized Losses	(5,941)	(8,651)
U.S. Government agencies and corporations
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	58,282	65,388
Less than 12 Months, Aggregate Losses	(3,405)	(6,463)
Twelve Months or Longer, Fair Value	9,159	0
Twelve Months or Longer, Unrealized Losses	(837)	0
Total, Fair Value	67,441	65,388
Total, Unrealized Losses	(4,242)	(6,463)
Mortgage backed securities: residential
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	29,332	28,603
Less than 12 Months, Aggregate Losses	(454)	(566)
Twelve Months or Longer, Fair Value	24,875	31,051
Twelve Months or Longer, Unrealized Losses	(609)	(679)
Total, Fair Value	54,207	59,654
Total, Unrealized Losses	(1,063)	(1,245)
Collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	6,741	5,079
Less than 12 Months, Aggregate Losses	(86)	(59)
Twelve Months or Longer, Fair Value	4,287	4,411
Twelve Months or Longer, Unrealized Losses	(185)	(191)
Total, Fair Value	11,028	9,490
Total, Unrealized Losses	(271)	(250)
State and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	7,526	9,188
Less than 12 Months, Aggregate Losses	(316)	(602)
Twelve Months or Longer, Fair Value	488	447
Twelve Months or Longer, Unrealized Losses	(49)	(91)
Total, Fair Value	8,014	9,635
Total, Unrealized Losses	$ (365)	$ (693)