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Investment Securities (Details 1) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($) Number | Dec. 31, 2014 USD ($) Number
Schedule of Available-for-sale Securities [Line Items] |  |
No. of securities | Number | 212 | 189
Fair value, Less than 12 months | $ 106,304 | $ 56,580
Unrealized losses, Less than 12 months | (877) | (249)
Fair value, 12 months or longer | 12,101 | 59,873
Unrealized losses, 12 months or longer | (198) | (1,261)
Total, Fair value | 118,405 | 116,453
Total, Unrealized losses | $ (1,075) | $ (1,510)
U. S. treasury securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
No. of securities | Number | 2 | 1
Fair value, Less than 12 months | $ 3,542 | $ 2,960
Unrealized losses, Less than 12 months | (1) | (1)
Fair value, 12 months or longer | 0 | 0
Unrealized losses, 12 months or longer | 0 | 0
Total, Fair value | 3,542 | 2,960
Total, Unrealized losses | $ (1) | $ (1)
U.S. federal agency obligations [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
No. of securities | Number | 18 | 14
Fair value, Less than 12 months | $ 23,015 | $ 7,361
Unrealized losses, Less than 12 months | (163) | (14)
Fair value, 12 months or longer | 1,976 | 11,958
Unrealized losses, 12 months or longer | (24) | (260)
Total, Fair value | 24,991 | 19,319
Total, Unrealized losses | $ (187) | $ (274)
Municipal obligations, tax exempt [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
No. of securities | Number | 47 | 71
Fair value, Less than 12 months | $ 11,328 | $ 13,927
Unrealized losses, Less than 12 months | (53) | (66)
Fair value, 12 months or longer | 2,132 | 7,329
Unrealized losses, 12 months or longer | (18) | (114)
Total, Fair value | 13,460 | 21,256
Total, Unrealized losses | $ (71) | $ (180)
Municipal obligations, taxable [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
No. of securities | Number | 105 | 74
Fair value, Less than 12 months | $ 38,605 | $ 14,797
Unrealized losses, Less than 12 months | (494) | (92)
Fair value, 12 months or longer | 5,068 | 14,827
Unrealized losses, 12 months or longer | (87) | (258)
Total, Fair value | 43,673 | 29,624
Total, Unrealized losses | $ (581) | $ (350)
Agency mortgage-backed securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
No. of securities | Number | 40 | 29
Fair value, Less than 12 months | $ 29,814 | $ 17,535
Unrealized losses, Less than 12 months | (166) | (76)
Fair value, 12 months or longer | 2,925 | 25,759
Unrealized losses, 12 months or longer | (69) | (629)
Total, Fair value | 32,739 | 43,294
Total, Unrealized losses | $ (235) | $ (705)

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- Definition Amount of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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