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Securities - Unrealized Loss Positions (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 USD ($) security | Sep. 30, 2016 USD ($) security
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 26 | 20
Greater than 12 months in an unrealized loss position | security | 29 | 31
Total | security | 55 | 51
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 3,215 | $ 1,209
Greater than 12 months in an unrealized loss position | 11,821 | 10,771
Total | 15,036 | 11,980
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 142,402 | 92,145
Greater than 12 months in an unrealized loss position | 245,409 | 204,599
Total | $ 387,811 | $ 296,744
Securities Held-to-Maturity, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 8 |
Greater than 12 months in an unrealized loss position | security | 2 |
Total | security | 10 |
Securities Held-to-Maturity, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 505 |
Greater than 12 months in an unrealized loss position | 460 |
Total | 965 |
Securities Held-to-Maturity, Fair Value |  |
Less than 12 months in an unrealized loss position | 40,307 |
Greater than 12 months in an unrealized loss position | 33,842 |
Total | $ 74,149 |
U.S. Treasury |  |
Securities Available-for-Sale, Number of Securities |  |
Greater than 12 months in an unrealized loss position | security | 1 |
Total | security | 1 |
Securities Available-for-Sale, Unrealized Losses |  |
Greater than 12 months in an unrealized loss position | $ 127 |
Total | 127 |
Securities Available-for-Sale, Fair Value |  |
Greater than 12 months in an unrealized loss position | 1,556 |
Total | $ 1,556 |
U.S. government agencies |  |
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 |  | 1
Total | security | 1 | 1
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 44 |
Greater than 12 months in an unrealized loss position |  | $ 158
Total | 44 | 158
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 1,996 |
Greater than 12 months in an unrealized loss position |  | 1,503
Total | $ 1,996 | $ 1,503
States and political subdivisions |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 2 |
Greater than 12 months in an unrealized loss position | security | 1 |
Total | security | 3 |
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 19 |
Greater than 12 months in an unrealized loss position | 81 |
Total | 100 |
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 1,541 |
Greater than 12 months in an unrealized loss position | 1,713 |
Total | $ 3,254 |
Corporate bonds |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 5 | 2
Greater than 12 months in an unrealized loss position | security | 3 | 2
Total | security | 8 | 4
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 292 | $ 52
Greater than 12 months in an unrealized loss position | 465 | 176
Total | 757 | 228
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 14,866 | 5,423
Greater than 12 months in an unrealized loss position | 14,534 | 5,307
Total | $ 29,400 | $ 10,730
Collateralized mortgage obligations |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 4 | 10
Greater than 12 months in an unrealized loss position | security | 7 | 6
Total | security | 11 | 16
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 334 | $ 415
Greater than 12 months in an unrealized loss position | 1,513 | 343
Total | 1,847 | 758
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 16,218 | 50,958
Greater than 12 months in an unrealized loss position | 43,618 | 17,020
Total | $ 59,836 | $ 67,978
Securities Held-to-Maturity, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 8 |
Greater than 12 months in an unrealized loss position | security | 2 |
Total | security | 10 |
Securities Held-to-Maturity, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 505 |
Greater than 12 months in an unrealized loss position | 460 |
Total | 965 |
Securities Held-to-Maturity, Fair Value |  |
Less than 12 months in an unrealized loss position | 40,307 |
Greater than 12 months in an unrealized loss position | 33,842 |
Total | $ 74,149 |
Asset-backed securities |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 9 | 6
Greater than 12 months in an unrealized loss position | security | 8 | 10
Total | security | 17 | 16
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 2,080 | $ 694
Greater than 12 months in an unrealized loss position | 7,958 | 8,958
Total | 10,038 | 9,652
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 78,301 | 23,817
Greater than 12 months in an unrealized loss position | 121,217 | 99,432
Total | $ 199,518 | $ 123,249
Collateralized loan obligations |  |
Securities Available-for-Sale, Number of Securities |  |
Less than 12 months in an unrealized loss position | security | 5 | 2
Greater than 12 months in an unrealized loss position | security | 9 | 12
Total | security | 14 | 14
Securities Available-for-Sale, Unrealized Losses |  |
Less than 12 months in an unrealized loss position | $ 446 | $ 48
Greater than 12 months in an unrealized loss position | 1,677 | 1,136
Total | 2,123 | 1,184
Securities Available-for-Sale, Fair Value |  |
Less than 12 months in an unrealized loss position | 29,480 | 11,947
Greater than 12 months in an unrealized loss position | 62,771 | 81,337
Total | $ 92,251 | $ 93,284

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