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Securities | 6 Months Ended
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Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract] |
Securities | Securities The amortized cost and estimated fair value of securities available-for-sale and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income were as follows:
|  | As of June 30, 2016
|  | Amortized cost |  | Gross unrealized holding gains |  | Gross unrealized holding losses |  | Estimated fair value
|  | (In Thousands)
Available-for-sale: |  |  |  |  |  |  |  |
U.S. Government agency obligations - government-sponsored enterprises |  | $ | 7,298 |  |  | $ | 48 |  |  | $ | (5 | ) |  | $ | 7,341 |
Municipal obligations |  | 6,147 |  |  | 27 |  |  | (4 | ) |  | 6,170 |
Asset-backed securities |  | 1,223 |  |  | — |  |  | (50 | ) |  | 1,173 |
Collateralized mortgage obligations - government issued |  | 35,026 |  |  | 763 |  |  | (21 | ) |  | 35,768 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 86,418 |  |  | 849 |  |  | (27 | ) |  | 87,240 |
|  | $ | 136,112 |  |  | $ | 1,687 |  |  | $ | (107 | ) |  | $ | 137,692 |
|  | As of December 31, 2015
|  | Amortized cost |  | Gross unrealized holding gains |  | Gross unrealized holding losses |  | Estimated fair value
|  | (In Thousands)
Available-for-sale: |  |  |  |  |  |  |  |
U.S. Government agency obligations - government-sponsored enterprises |  | $ | 8,047 |  |  | $ | 2 |  |  | $ | (32 | ) |  | $ | 8,017 |
Municipal obligations |  | 4,278 |  |  | 12 |  |  | (7 | ) |  | 4,283 |
Asset-backed securities |  | 1,327 |  |  | — |  |  | (58 | ) |  | 1,269 |
Collateralized mortgage obligations - government issued |  | 43,845 |  |  | 814 |  |  | (116 | ) |  | 44,543 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 82,707 |  |  | 145 |  |  | (416 | ) |  | 82,436 |
|  | $ | 140,204 |  |  | $ | 973 |  |  | $ | (629 | ) |  | $ | 140,548 |
The amortized cost and estimated fair value of securities held-to-maturity and the corresponding amounts of gross unrecognized gains and losses were as follows:
|  | As of June 30, 2016
|  | Amortized cost |  | Gross unrecognized holding gains |  | Gross unrecognized holding losses |  | Estimated fair value
|  | (In Thousands)
Held-to-maturity: |  |  |  |  |  |  |  |
U.S. Government agency obligations - government-sponsored enterprises |  | $ | 1,496 |  |  | $ | 8 |  |  | $ | — |  |  | $ | 1,504 |
Municipal obligations |  | 16,727 |  |  | 499 |  |  | (2 | ) |  | 17,224 |
Collateralized mortgage obligations - government issued |  | 10,487 |  |  | 171 |  |  | — |  |  | 10,658 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 7,457 |  |  | 166 |  |  | — |  |  | 7,623 |
|  | $ | 36,167 |  |  | $ | 844 |  |  | $ | (2 | ) |  | $ | 37,009 |
|  | As of December 31, 2015
|  | Amortized cost |  | Gross unrecognized holding gains |  | Gross unrecognized holding losses |  | Estimated fair value
|  | (In Thousands)
Held-to-maturity: |  |  |  |  |  |  |  |
U.S. Government agency obligations - government-sponsored enterprises |  | $ | 1,495 |  |  | $ | 1 |  |  | $ | (11 | ) |  | $ | 1,485 |
Municipal obligations |  | 16,038 |  |  | 332 |  |  | (5 | ) |  | 16,365 |
Collateralized mortgage obligations - government issued |  | 11,718 |  |  | 32 |  |  | (41 | ) |  | 11,709 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 8,031 |  |  | 12 |  |  | (44 | ) |  | 7,999 |
|  | $ | 37,282 |  |  | $ | 377 |  |  | $ | (101 | ) |  | $ | 37,558 |
U.S. Government agency obligations - government-sponsored enterprises represent securities issued by the Federal Home Loan Mortgage Corporation (“FHLMC”) and Federal National Mortgage Association (“FNMA”). Collateralized mortgage obligations - government issued represent securities guaranteed by the Government National Mortgage Association (“GNMA”). Collateralized mortgage obligations - government-sponsored enterprises include securities guaranteed by the FHLMC and the FNMA. Asset-backed securities represent securities issued by the Student Loan Marketing Association (“SLMA”) which are 97% guaranteed by the U.S. government. Municipal obligations include securities issued by various municipalities located primarily within the State of Wisconsin and are primarily general obligation bonds that are tax-exempt in nature. For the six months ended June 30, 2016, a gain of $7,000 was recorded from the sale of 3 available-for-sale securities. No sales of available for sale securities occurred during the six months ended June 30, 2015. At June 30, 2016 and December 31, 2015, securities with a fair value of $19.0 million and $23.0 million, respectively, were pledged to secure interest rate swap contracts, outstanding Federal Home Loan Bank (“FHLB”) advances, if any, and additional FHLB availability. The amortized cost and estimated fair value of securities by contractual maturity at June 30, 2016 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations without call or prepayment penalties.
|  | As of June 30, 2016
|  | Available-for-Sale |  | Held-to-Maturity
|  | Amortized cost |  | Estimated fair value |  | Amortized cost |  | Estimated fair value
|  | (In Thousands)
Due in one year or less |  | $ | 2,510 |  |  | $ | 2,510 |  |  | $ | — |  |  | $ | — |
Due in one year through five years |  | 12,180 |  |  | 12,278 |  |  | 5,700 |  |  | 5,786 |
Due in five through ten years |  | 85,137 |  |  | 86,292 |  |  | 12,522 |  |  | 12,942 |
Due in over ten years |  | 36,285 |  |  | 36,612 |  |  | 17,945 |  |  | 18,281 |
|  | $ | 136,112 |  |  | $ | 137,692 |  |  | $ | 36,167 |  |  | $ | 37,009 |
The tables below show the Corporation’s gross unrealized losses and fair value of available-for-sale investments with unrealized losses, aggregated by investment category and length of time that individual investments were in a continuous loss position at June 30, 2016 and December 31, 2015. At June 30, 2016 , the Corporation held 25 available-for-sale securities that were in an unrealized loss position. Such securities have not experienced credit rating downgrades; however, they have primarily declined in value due to the current interest rate environment. At June 30, 2016, the Corporation held 10 available-for-sale securities that had been in a continuous unrealized loss position for twelve months or greater. The Corporation also has not specifically identified available-for-sale securities in a loss position that it intends to sell in the near term and does not believe that it will be required to sell any such securities. The Corporation reviews its securities on a quarterly basis to monitor its exposure to other-than-temporary impairment. Consideration is given to such factors as the length of time and extent to which the security has been in an unrealized loss position, changes in security ratings, and an evaluation of the present value of expected future cash flows, if necessary. Based on the Corporation’s evaluation, it is expected that the Corporation will recover the entire amortized cost basis of each security. Accordingly, no other than temporary impairment was recorded in the Consolidated Statements of Income for the six months ended June 30, 2016 and 2015. A summary of unrealized loss information for securities available-for-sale, categorized by security type and length of time for which the security has been in a continuous unrealized loss position follows:
|  | As of June 30, 2016
|  | Less than 12 months |  | 12 months or longer |  | Total
|  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses
|  | (In Thousands)
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency obligations - government-sponsored enterprises |  | $ | 999 |  |  | $ | 1 |  |  | $ | 1,996 |  |  | $ | 4 |  |  | $ | 2,995 |  |  | $ | 5 |
Municipal obligations |  | 1,391 |  |  | 2 |  |  | 412 |  |  | 2 |  |  | 1,803 |  |  | 4 |
Asset-backed securities |  | — |  |  | — |  |  | 1,173 |  |  | 50 |  |  | 1,173 |  |  | 50 |
Collateralized mortgage obligations - government issued |  | 730 |  |  | 1 |  |  | 2,731 |  |  | 20 |  |  | 3,461 |  |  | 21 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 6,602 |  |  | 20 |  |  | 961 |  |  | 7 |  |  | 7,563 |  |  | 27 |
|  | $ | 9,722 |  |  | $ | 24 |  |  | $ | 7,273 |  |  | $ | 83 |  |  | $ | 16,995 |  |  | $ | 107 |
|  | As of December 31, 2015
|  | Less than 12 months |  | 12 months or longer |  | Total
|  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses
|  | (In Thousands)
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency obligations - government-sponsored enterprises |  | $ | 3,536 |  |  | $ | 13 |  |  | $ | 1,981 |  |  | $ | 19 |  |  | $ | 5,517 |  |  | $ | 32 |
Municipal obligations |  | 2,403 |  |  | 7 |  |  | — |  |  | — |  |  | 2,403 |  |  | 7 |
Asset-backed securities |  | 1,269 |  |  | $ | 58 |  |  | — |  |  | — |  |  | 1,269 |  |  | 58 |
Collateralized mortgage obligations - government issued |  | 3,373 |  |  | 19 |  |  | 5,687 |  |  | 97 |  |  | 9,060 |  |  | 116 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 59,992 |  |  | 373 |  |  | 1,717 |  |  | 43 |  |  | 61,709 |  |  | 416 |
|  | $ | 70,573 |  |  | $ | 470 |  |  | $ | 9,385 |  |  | $ | 159 |  |  | $ | 79,958 |  |  | $ | 629 |
The tables below show the Corporation’s gross unrecognized losses and fair value of held-to-maturity investments, aggregated by investment category and length of time that individual investments were in a continuous loss position at June 30, 2016 and December 31, 2015. At June 30, 2016, the Corporation held one held-to-maturity security that was in an unrecognized loss position. Such security has not experienced credit rating downgrades; however, it has primarily declined in value due to the current interest rate environment. There were no held-to-maturity securities that were in a continuous unrecognized loss position for twelve months or greater as of June 30, 2016. It is expected that the Corporation will recover the entire amortized cost basis of each held-to-maturity security based upon an evaluation of the present value of the expected future cash flows. Accordingly, no other than temporary impairment was recorded in the Consolidated Statements of Income for the six months ended June 30, 2016 and 2015. A summary of unrecognized loss information for securities held-to-maturity, categorized by security type follows:
|  | As of June 30, 2016
|  | Less than 12 months |  | 12 months or longer |  | Total
|  | Fair value |  | Unrecognized losses |  | Fair value |  | Unrecognized losses |  | Fair value |  | Unrecognized losses
|  | (In Thousands)
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency obligations - government-sponsored enterprises |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Municipal obligations |  | 264 |  |  | (2 | ) |  | — |  |  | — |  |  | 264 |  |  | (2 | )
Collateralized mortgage obligations - government issued |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Collateralized mortgage obligations - government-sponsored enterprises |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
|  | $ | 264 |  |  | $ | (2 | ) |  | $ | — |  |  | $ | — |  |  | $ | 264 |  |  | $ | (2 | )
|  | As of December 31, 2015
|  | Less than 12 months |  | 12 months or longer |  | Total
|  | Fair value |  | Unrecognized losses |  | Fair value |  | Unrecognized losses |  | Fair value |  | Unrecognized losses
|  | (In Thousands)
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency obligations - government-sponsored enterprises |  | $ | — |  |  | $ | — |  |  | $ | 1,000 |  |  | $ | 11 |  |  | $ | 1,000 |  |  | $ | 11 |
Municipal obligations |  | 436 |  |  | 4 |  |  | 199 |  |  | 1 |  |  | 635 |  |  | 5 |
Collateralized mortgage obligations - government issued |  | 6,518 |  |  | 41 |  |  | — |  |  | — |  |  | 6,518 |  |  | 41 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 5,168 |  |  | 44 |  |  | — |  |  | — |  |  | 5,168 |  |  | 44 |
|  | $ | 12,122 |  |  | $ | 89 |  |  | $ | 1,199 |  |  | $ | 12 |  |  | $ | 13,321 |  |  | $ | 101 |

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