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Securities (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013
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Securities |  |
FHLBC stock | $ 5,500,000 | $ 5,500,000
FRB stock | 4,800,000 | 4,800,000
Securities Available-for-Sale |  |
Amortized Cost | 331,513,000 | 376,286,000
Gross Unrealized Gains | 3,112,000 | 3,070,000
Gross Unrealized Losses | (4,811,000) | (7,165,000)
Fair Value | 329,814,000 | 372,191,000
Securities Held-to-Maturity |  |
Amortized Cost | 264,683,000 | 256,571,000
Gross Unrealized Gains | 4,039,000 | 688,000
Gross Unrealized Losses | (952,000) | (2,931,000)
Fair Value | 267,770,000 | 254,328,000
U.S. Treasury |  |
Securities Available-for-Sale |  |
Amortized Cost | 1,539,000 | 1,549,000
Gross Unrealized Losses | (1,000) | (5,000)
Fair Value | 1,538,000 | 1,544,000
U.S. government agencies |  |
Securities Available-for-Sale |  |
Amortized Cost | 1,724,000 | 1,738,000
Gross Unrealized Losses | (71,000) | (66,000)
Fair Value | 1,653,000 | 1,672,000
States and political subdivisions |  |
Securities Available-for-Sale |  |
Amortized Cost | 15,666,000 | 16,382,000
Gross Unrealized Gains | 388,000 | 629,000
Gross Unrealized Losses | (301,000) | (217,000)
Fair Value | 15,753,000 | 16,794,000
Corporate bonds |  |
Securities Available-for-Sale |  |
Amortized Cost | 31,598,000 | 15,733,000
Gross Unrealized Gains | 82,000 | 17,000
Gross Unrealized Losses | (330,000) | (648,000)
Fair Value | 31,350,000 | 15,102,000
Collateralized mortgage obligations |  |
Securities Available-for-Sale |  |
Amortized Cost | 34,992,000 | 66,766,000
Gross Unrealized Gains | 61,000 | 256,000
Gross Unrealized Losses | (1,970,000) | (3,146,000)
Fair Value | 33,083,000 | 63,876,000
Securities Held-to-Maturity |  |
Amortized Cost | 227,377,000 | 221,303,000
Gross Unrealized Gains | 2,618,000 | 643,000
Gross Unrealized Losses | (952,000) | (2,858,000)
Fair Value | 229,043,000 | 219,088,000
Asset-backed securities |  |
Securities Available-for-Sale |  |
Amortized Cost | 245,994,000 | 274,118,000
Gross Unrealized Gains | 2,581,000 | 2,168,000
Gross Unrealized Losses | (2,138,000) | (3,083,000)
Fair Value | 246,437,000 | 273,203,000
U.S. government agency mortgage-backed |  |
Securities Held-to-Maturity |  |
Amortized Cost | 37,306,000 | 35,268,000
Gross Unrealized Gains | 1,421,000 | 45,000
Gross Unrealized Losses |  | (73,000)
Fair Value | 38,727,000 | 35,240,000
Mortgage-backed and collateralized mortgage obligations |  |
Securities Held-to-Maturity |  |
Amortized Cost | 264,683,000 |
Fair Value | $ 267,770,000 |

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