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Securities Available for Sale (Details 3) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	$ 79,350	$ 212,479
Unrealized Losses, Less Than 12 Months	(680)	(4,945)
Fair Value, 12 Months or Longer	111,378	49,393
Unrealized Losses, 12 Months or Longer	(2,818)	(1,666)
Fair Value, Total	190,728	261,872
Unrealized Losses, Total	(3,498)	(6,611)
Corporate bonds
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	397	786
Unrealized Losses, Less Than 12 Months	(3)	(8)
Fair Value, 12 Months or Longer	383	0
Unrealized Losses, 12 Months or Longer	(5)	0
Fair Value, Total	780	786
Unrealized Losses, Total	(8)	(8)
Collateralized mortgage obligations
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	1,701	7,956
Unrealized Losses, Less Than 12 Months	(22)	(108)
Fair Value, 12 Months or Longer	15,420	10,972
Unrealized Losses, 12 Months or Longer	(755)	(597)
Fair Value, Total	17,121	18,928
Unrealized Losses, Total	(777)	(705)
Small Business Administration
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	0	8,770
Unrealized Losses, Less Than 12 Months	0	(205)
Fair Value, 12 Months or Longer	14,182	7,890
Unrealized Losses, 12 Months or Longer	(396)	(325)
Fair Value, Total	14,182	16,660
Unrealized Losses, Total	(396)	(530)
U.S. Treasury and U.S. government sponsored entities
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	3,970	4,015
Unrealized Losses, Less Than 12 Months	(34)	(54)
Fair Value, 12 Months or Longer	1,912	502
Unrealized Losses, 12 Months or Longer	(35)	0
Fair Value, Total	5,882	4,517
Unrealized Losses, Total	(69)	(54)
State and political subdivisions
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	33,188	92,560
Unrealized Losses, Less Than 12 Months	(220)	(2,745)
Fair Value, 12 Months or Longer	25,721	286
Unrealized Losses, 12 Months or Longer	(423)	(15)
Fair Value, Total	58,909	92,846
Unrealized Losses, Total	(643)	(2,760)
Mortgage-backed securities - residential
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	40,072	98,348
Unrealized Losses, Less Than 12 Months	(400)	(1,823)
Fair Value, 12 Months or Longer	53,760	29,743
Unrealized Losses, 12 Months or Longer	(1,204)	(729)
Fair Value, Total	93,832	128,091
Unrealized Losses, Total	(1,604)	(2,552)
Equity securities
Investment securities with unrealized losses
Fair Value, Less Than 12 Months	22	44
Unrealized Losses, Less Than 12 Months	(1)	(2)
Fair Value, 12 Months or Longer	0	0
Unrealized Losses, 12 Months or Longer	0	0
Fair Value, Total	22	44
Unrealized Losses, Total	$ (1)	$ (2)

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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