Investment Securities (Details 1) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 92,149
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	1,352
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	92,149
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	1,352
US Treasury Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	5,369
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	6
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	5,369
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	6
US Government Corporations and Agencies Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	30,603
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	394
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	30,603
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	394
Collateralized Mortgage Backed Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	56,177
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	952
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	56,177
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	$ 952