Investment Securities (Details 2) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Fair Value
Less than 12 Months	$ 36,982		$ 36,982		$ 257,218
12 months or Longer	19,624		19,624		67,762
Total fair value	56,606		56,606		324,980
Unrealized Losses
Less than 12 Months	(105)		(105)		(2,060)
12 months or Longer	(237)		(237)		(1,400)
Total unrealized losses	(342)		(342)		(3,460)
Gross realized gains and losses
Gross realized gains	85	$ 4	95	$ 4
Gross realized losses	0	0	0	0
OTTI losses	(294)	0	(294)	0
Net realized gains (losses)	(209)	$ 4	(199)	$ 4
Investment securities pledged as collateral	249,000		249,000		233,140
U.S. Treasury and Federal agencies securities
Fair Value
Less than 12 Months	5,974		5,974		151,581
12 months or Longer	0		0		43,372
Total fair value	5,974		5,974		194,953
Unrealized Losses
Less than 12 Months	(5)		(5)		(928)
12 months or Longer	0		0		(578)
Total unrealized losses	(5)		(5)		(1,506)
U.S. States and political subdivisions securities
Fair Value
Less than 12 Months	7,237		7,237		17,040
12 months or Longer	4,474		4,474		3,795
Total fair value	11,711		11,711		20,835
Unrealized Losses
Less than 12 Months	(22)		(22)		(79)
12 months or Longer	(41)		(41)		(64)
Total unrealized losses	(63)		(63)		(143)
Mortgage-backed securities - Federal agencies
Fair Value
Less than 12 Months	23,770		23,770		78,731
12 months or Longer	15,147		15,147		20,592
Total fair value	38,917		38,917		99,323
Unrealized Losses
Less than 12 Months	(78)		(78)		(777)
12 months or Longer	(194)		(194)		(756)
Total unrealized losses	(272)		(272)		(1,533)
Corporate debt securities
Fair Value
Less than 12 Months	0		0		9,340
12 months or Longer	0		0		0
Total fair value	0		0		9,340
Unrealized Losses
Less than 12 Months	0		0		(57)
12 months or Longer	0		0		0
Total unrealized losses	0		0		(57)
Foreign government and other securities
Fair Value
Less than 12 Months	0		0		99
12 months or Longer	0		0		0
Total fair value	0		0		99
Unrealized Losses
Less than 12 Months	0		0		(1)
12 months or Longer	0		0		0
Total unrealized losses	0		0		(1)
Total debt securities
Fair Value
Less than 12 Months	36,981		36,981		256,791
12 months or Longer	19,621		19,621		67,759
Total fair value	56,602		56,602		324,550
Unrealized Losses
Less than 12 Months	(105)		(105)		(1,842)
12 months or Longer	(235)		(235)		(1,398)
Total unrealized losses	(340)		(340)		(3,240)
Marketable equity securities
Fair Value
Less than 12 Months	1		1		427
12 months or Longer	3		3		3
Total fair value	4		4		430
Unrealized Losses
Less than 12 Months	0		0		(218)
12 months or Longer	(2)		(2)		(2)
Total unrealized losses	$ (2)		$ (2)		$ (220)

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 50
-Paragraph 2
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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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