Securities - Gross Unrealized Losses and Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Less Than 12 Months, Fair Value	$ 143,073	$ 134,940
Less Than 12 Months, Unrealized Losses	(1,324)	(1,823)
12 Months or Longer, Fair Value	23,871	31,192
12 Months or Longer, Unrealized Losses	(1,034)	(689)
Total, Fair Value	166,944	166,132
Total, Unrealized Losses	(2,358)	(2,512)
U.S. Government-sponsored agencies
Less Than 12 Months, Fair Value	29,919	18,289
Less Than 12 Months, Unrealized Losses	(257)	(237)
12 Months or Longer, Fair Value	263	8,537
12 Months or Longer, Unrealized Losses	(35)	(245)
Total, Fair Value	30,182	26,826
Total, Unrealized Losses	(292)	(482)
Municipal securities
Less Than 12 Months, Fair Value	38,854	1,026
Less Than 12 Months, Unrealized Losses	(509)	(7)
12 Months or Longer, Fair Value	0	0
12 Months or Longer, Unrealized Losses	0	0
Total, Fair Value	38,854	1,026
Total, Unrealized Losses	(509)	(7)
Mortgage-backed securities
Less Than 12 Months, Fair Value	64,526	74,198
Less Than 12 Months, Unrealized Losses	(410)	(562)
12 Months or Longer, Fair Value	0	22,655
12 Months or Longer, Unrealized Losses	0	(444)
Total, Fair Value	64,526	96,853
Total, Unrealized Losses	(410)	(1,006)
Asset-backed securities
Less Than 12 Months, Fair Value	4,913	19,361
Less Than 12 Months, Unrealized Losses	(9)	(83)
12 Months or Longer, Fair Value	9,589	0
12 Months or Longer, Unrealized Losses	(18)	0
Total, Fair Value	14,502	19,361
Total, Unrealized Losses	(27)	(83)
Corporate securities
Less Than 12 Months, Fair Value	4,861	19,087
Less Than 12 Months, Unrealized Losses	(139)	(913)
12 Months or Longer, Fair Value	14,019	0
12 Months or Longer, Unrealized Losses	(981)	0
Total, Fair Value	18,880	19,087
Total, Unrealized Losses	$ (1,120)	(913)
Other securities
Less Than 12 Months, Fair Value		2,979
Less Than 12 Months, Unrealized Losses		(21)
12 Months or Longer, Fair Value		0
12 Months or Longer, Unrealized Losses		0
Total, Fair Value		2,979
Total, Unrealized Losses		$ (21)