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2. Investment securities, Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Investment securities with continuous unrealized loss position |  |
Less than 12 Months, Fair Value | $ 13,531 | $ 22,160
Less than 12 Months, Unrealized Losses | 151 | 175
12 Months or More, Fair Value | 44,420 | 22,827
12 Months or More, Unrealized Losses | 1,243 | 434
Total, Fair Value | 57,951 | 44,987
Total, Unrealized Losses | 1,394 | 609
Mortgage-backed securities |  |
Investment securities with continuous unrealized loss position |  |
Less than 12 Months, Fair Value | 6,932 | 8,701
Less than 12 Months, Unrealized Losses | 56 | 75
12 Months or More, Fair Value | 17,670 | 11,259
12 Months or More, Unrealized Losses | 502 | 254
Total, Fair Value | 24,602 | 19,960
Total, Unrealized Losses | 558 | 329
U.S. Government sponsored enterprises |  |
Investment securities with continuous unrealized loss position |  |
Less than 12 Months, Fair Value | 1,784 | 12,661
Less than 12 Months, Unrealized Losses | 69 | 98
12 Months or More, Fair Value | 25,172 | 10,067
12 Months or More, Unrealized Losses | 724 | 166
Total, Fair Value | 26,956 | 22,728
Total, Unrealized Losses | 793 | 264
State and political subdivisions |  |
Investment securities with continuous unrealized loss position |  |
Less than 12 Months, Fair Value | 4,815 | 798
Less than 12 Months, Unrealized Losses | 26 | 2
12 Months or More, Fair Value | 1,578 | 1,501
12 Months or More, Unrealized Losses | 17 | 14
Total, Fair Value | 6,393 | 2,299
Total, Unrealized Losses | $ 43 | $ 16

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