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Securities (Unrealized Loss NOT deemed to be OTTI) (Details) $ in Thousands | Sep. 30, 2017 USD ($) holding | Dec. 31, 2016 USD ($) holding
--- | --- | ---
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 77 | 121
Fair value, less than 12 months | $ 281,477 | $ 444,471
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (2,886) | (5,510)
Fair value, 12 months or longer | 62,409 | 56,356
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | (2,654) | (3,084)
Fair value, Total | 343,886 | 500,827
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (5,540) | $ (8,594)
Agency mortgage-backed securities |  |
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 23 | 57
Fair value, less than 12 months | $ 88,083 | $ 137,949
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (438) | (1,594)
Fair value, 12 months or longer | 762 | 0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | (7) | 0
Fair value, Total | 88,845 | 137,949
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (445) | $ (1,594)
Agency Collateralized Mortgage Obligations [Member] |  |
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 25 | 32
Fair value, less than 12 months | $ 145,572 | $ 243,051
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (2,278) | (3,140)
Fair value, 12 months or longer | 52,466 | 47,403
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | (1,707) | (1,989)
Fair value, Total | 198,038 | 290,454
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (3,985) | $ (5,129)
Single issuer trust preferred securities issued by banks and insurers |  |
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding |  | 1
Fair value, less than 12 months |  | $ 0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months |  | 0
Fair value, 12 months or longer |  | 1,036
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months |  | (3)
Fair value, Total |  | 1,036
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss |  | $ (3)
Pooled trust preferred securities issued by banks and insurers |  |
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 1 | 1
Fair value, less than 12 months | $ 0 | $ 0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | 0 | 0
Fair value, 12 months or longer | 1,624 | 1,583
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | (558) | (616)
Fair value, Total | 1,624 | 1,583
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (558) | $ (616)
Equity securities |  |
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 24 | 25
Fair value, less than 12 months | $ 897 | $ 3,625
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (17) | (77)
Fair value, 12 months or longer | 7,557 | 6,334
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | (382) | (476)
Fair value, Total | 8,454 | 9,959
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (399) | $ (553)
Small Business Administration Pooled Securities [Member] |  |
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 4 | 5
Fair value, less than 12 months | $ 46,925 | $ 59,846
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (153) | (699)
Fair value, 12 months or longer | 0 | 0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | 0 | 0
Fair value, Total | 46,925 | 59,846
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (153) | $ (699)

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