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Securities (Details 2) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	$ 181,682	$ 79,328
Unrealized Losses, Less Than 12 Months	(4,818)	(679)
Fair Value, 12 Months or Longer	105,967	111,378
Unrealized Losses, 12 Months or Longer	(5,295)	(2,818)
Fair Value, Total	287,649	190,706
Unrealized Losses, Total	(10,113)	(3,497)
Corporate bonds
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	784	397
Unrealized Losses, Less Than 12 Months	(12)	(3)
Fair Value, 12 Months or Longer	377	383
Unrealized Losses, 12 Months or Longer	(11)	(5)
Fair Value, Total	1,161	780
Unrealized Losses, Total	(23)	(8)
Small Business Administration
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	0	0
Unrealized Losses, Less Than 12 Months	0	0
Fair Value, 12 Months or Longer	13,716	14,182
Unrealized Losses, 12 Months or Longer	(506)	(396)
Fair Value, Total	13,716	14,182
Unrealized Losses, Total	(506)	(396)
U.S. Treasury and U.S. government sponsored entities
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	4,175	3,970
Unrealized Losses, Less Than 12 Months	(79)	(34)
Fair Value, 12 Months or Longer	1,854	1,912
Unrealized Losses, 12 Months or Longer	(58)	(35)
Fair Value, Total	6,029	5,882
Unrealized Losses, Total	(137)	(69)
State and political subdivisions
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	70,499	33,188
Unrealized Losses, Less Than 12 Months	(2,019)	(220)
Fair Value, 12 Months or Longer	24,947	25,721
Unrealized Losses, 12 Months or Longer	(1,166)	(423)
Fair Value, Total	95,446	58,909
Unrealized Losses, Total	(3,185)	(643)
Mortgage-backed securities - residential
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	104,615	40,072
Unrealized Losses, Less Than 12 Months	(2,671)	(400)
Fair Value, 12 Months or Longer	50,549	53,760
Unrealized Losses, 12 Months or Longer	(2,573)	(1,204)
Fair Value, Total	155,164	93,832
Unrealized Losses, Total	(5,244)	(1,604)
Collateralized mortgage obligations - residential
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	1,609	1,701
Unrealized Losses, Less Than 12 Months	(37)	(22)
Fair Value, 12 Months or Longer	14,524	15,420
Unrealized Losses, 12 Months or Longer	(981)	(755)
Fair Value, Total	16,133	17,121
Unrealized Losses, Total	$ (1,018)	$ (777)

X

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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

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