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Securities (Unrealized Loss NOT deemed to be OTTI) (Details) $ in Thousands | Mar. 31, 2017 USD ($) holding | Dec. 31, 2016 USD ($) holding
--- | --- | ---
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 102 | 121
Fair value, less than 12 months | $ 440,838 | $ 444,471
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (4,928) | (5,510)
Fair value, 12 months or longer | 52,982 | 56,356
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | (3,006) | (3,084)
Fair value, Total | 493,820 | 500,827
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (7,934) | $ (8,594)
Agency mortgage-backed securities |  |
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 42 | 57
Fair value, less than 12 months | $ 145,227 | $ 137,949
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (1,522) | (1,594)
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 | 145,227 | 137,949
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (1,522) | $ (1,594)
Agency Collateralized Mortgage Obligations [Member] |  |
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 33 | 32
Fair value, less than 12 months | $ 247,688 | $ 243,051
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (3,003) | (3,140)
Fair value, 12 months or longer | 45,458 | 47,403
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | (1,985) | (1,989)
Fair value, Total | 293,146 | 290,454
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (4,988) | $ (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 | 1,596 | 1,583
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | (605) | (616)
Fair value, Total | 1,596 | 1,583
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (605) | $ (616)
Equity securities |  |
Summary of gross unrealized losses and fair value of investments |  |
No of holdings | holding | 22 | 25
Fair value, less than 12 months | $ 1,706 | $ 3,625
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (53) | (77)
Fair value, 12 months or longer | 5,928 | 6,334
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months | (416) | (476)
Fair value, Total | 7,634 | 9,959
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (469) | $ (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 | $ 46,217 | $ 59,846
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months | (350) | (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 | 46,217 | 59,846
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss | $ (350) | $ (699)

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