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6. Fair Value, Level of Hierarchy (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Estimated Fair Value | $ 268,821 | $ 281,099
Level 1 |  |
Estimated Fair Value | 1,174 | 1,378
Level 2 |  |
Estimated Fair Value | 266,897 | 278,971
Level 3 |  |
Estimated Fair Value | 750 | 750
Mortgage-backed securities |  |
Estimated Fair Value | 77,466 | 90,210
Mortgage-backed securities | Level 1 |  |
Estimated Fair Value | 0 | 0
Mortgage-backed securities | Level 2 |  |
Estimated Fair Value | 77,466 | 90,210
Mortgage-backed securities | Level 3 |  |
Estimated Fair Value | 0 | 0
U.S. Government sponsored enterprises |  |
Estimated Fair Value | 39,169 | 34,048
U.S. Government sponsored enterprises | Level 1 |  |
Estimated Fair Value | 0 | 0
U.S. Government sponsored enterprises | Level 2 |  |
Estimated Fair Value | 39,169 | 34,048
U.S. Government sponsored enterprises | Level 3 |  |
Estimated Fair Value | 0 | 0
State and political subdivisions |  |
Estimated Fair Value | 148,322 | 152,246
State and political subdivisions | Level 1 |  |
Estimated Fair Value | 0 | 0
State and political subdivisions | Level 2 |  |
Estimated Fair Value | 148,322 | 152,246
State and political subdivisions | Level 3 |  |
Estimated Fair Value | 0 | 0
Corporate bonds |  |
Estimated Fair Value | 1,940 | 2,467
Corporate bonds | Level 1 |  |
Estimated Fair Value | 0 | 0
Corporate bonds | Level 2 |  |
Estimated Fair Value | 1,940 | 2,467
Corporate bonds | Level 3 |  |
Estimated Fair Value | 0 | 0
Trust preferred securities |  |
Estimated Fair Value | 750 | 750
Trust preferred securities | Level 1 |  |
Estimated Fair Value | 0 | 0
Trust preferred securities | Level 2 |  |
Estimated Fair Value | 0 | 0
Trust preferred securities | Level 3 |  |
Estimated Fair Value | 750 | 750
Equity securities |  |
Estimated Fair Value | 1,174 | 1,378
Equity securities | Level 1 |  |
Estimated Fair Value | 1,174 | 1,378
Equity securities | Level 2 |  |
Estimated Fair Value | 0 | 0
Equity securities | Level 3 |  |
Estimated Fair Value | $ 0 | $ 0

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