Investment Securities (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 18,939	$ 54,507
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	61	182
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	33,261	34,412
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	427	617
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	52,200	88,919
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	488	799
U.S. Government agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	12,970	41,574
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	39	138
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	6,983	6,954
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	17	209
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	19,953	48,528
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	211	347
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	2,624	2,708
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	53	83
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	2,624	2,708
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Unrealized Losses	53	83
Mortgage-backed [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	5,969	12,933
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	22	44
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	25,638	26,828
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	410	408
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	31,607	39,761
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses	$ 277	$ 452