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Securities - Unrealized Loss Positions (Details) $ in Thousands | Jun. 30, 2017 USD ($) security | Dec. 31, 2016 USD ($) security
--- | --- | ---
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 25 | 44
Greater than 12 months in an unrealized loss position | security | 19 | 34
Total | security | 44 | 78
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 3,479 | $ 5,143
Greater than 12 months in an unrealized loss position | 5,059 | 9,463
Total | 8,538 | 14,606
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 116,201 | 216,050
Greater than 12 months in an unrealized loss position | 123,663 | 213,060
Total | $ 239,864 | $ 429,110
U.S. government agencies |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security |  | 11
Greater than 12 months in an unrealized loss position | security |  | 1
Total | security |  | 12
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position |  | $ 957
Greater than 12 months in an unrealized loss position |  | 20
Total |  | 977
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position |  | 40,636
Greater than 12 months in an unrealized loss position |  | 898
Total |  | $ 41,534
U.S. government agency mortgage-backed |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 8 |
Greater than 12 months in an unrealized loss position | security | 1 |
Total | security | 9 |
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 178 |
Greater than 12 months in an unrealized loss position | 21 |
Total | 199 |
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 17,764 |
Greater than 12 months in an unrealized loss position | 805 |
Total | $ 18,569 |
States and political subdivisions |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 4 | 12
Total | security | 4 | 12
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 1,052 | $ 273
Total | 1,052 | 273
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 16,372 | 35,241
Total | $ 16,372 | $ 35,241
Corporate bonds |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 1 | 1
Greater than 12 months in an unrealized loss position | security | 2 | 2
Total | security | 3 | 3
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 108 | $ 183
Greater than 12 months in an unrealized loss position | 141 | 153
Total | 249 | 336
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 4,892 | 4,817
Greater than 12 months in an unrealized loss position | 5,205 | 5,328
Total | $ 10,097 | $ 10,145
Collateralized mortgage obligations |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 10 | 16
Greater than 12 months in an unrealized loss position | security | 4 | 7
Total | security | 14 | 23
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 1,776 | $ 3,402
Greater than 12 months in an unrealized loss position | 187 | 397
Total | 1,963 | 3,799
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 64,987 | 117,752
Greater than 12 months in an unrealized loss position | 10,898 | 18,109
Total | $ 75,885 | $ 135,861
Asset-backed securities |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 1 | 4
Greater than 12 months in an unrealized loss position | security | 12 | 12
Total | security | 13 | 16
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 274 | $ 328
Greater than 12 months in an unrealized loss position | 4,710 | 7,997
Total | 4,984 | 8,325
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 4,281 | 17,604
Greater than 12 months in an unrealized loss position | 106,755 | 107,112
Total | $ 111,036 | $ 124,716
Collateralized loan obligations |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 1 |
Greater than 12 months in an unrealized loss position | security |  | 12
Total | security | 1 | 12
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 91 |
Greater than 12 months in an unrealized loss position |  | $ 896
Total | 91 | 896
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 7,905 |
Greater than 12 months in an unrealized loss position |  | 81,613
Total | $ 7,905 | $ 81,613

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