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Securities | 12 Months Ended
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Dec. 31, 2015
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 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 |
|  | As of December 31, 2014
|  | 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 |  | $ | 9,046 |  |  | $ | — |  |  | $ | (81 | ) |  | $ | 8,965 |
Municipal obligations |  | 573 |  |  | 5 |  |  | — |  |  | 578 |
Asset-backed securities |  | 1,514 |  |  | — |  |  | (4 | ) |  | 1,510 |
Collateralized mortgage obligations - government issued |  | 67,740 |  |  | 1,390 |  |  | (256 | ) |  | 68,874 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 64,763 |  |  | 234 |  |  | (226 | ) |  | 64,771 |
|  | $ | 143,636 |  |  | $ | 1,629 |  |  | $ | (567 | ) |  | $ | 144,698 |
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 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 |
Asset-backed securities |  | — |  |  | — |  |  | — |  |  | — |
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 |
|  | As of December 31, 2014
|  | 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 |  | $ | 1,490 |  |  | $ | — |  |  | $ | (17 | ) |  | $ | 1,473 |
Municipal obligations |  | 16,088 |  |  | 85 |  |  | (18 | ) |  | 16,155 |
Asset-backed securities |  | — |  |  | — |  |  | — |  |  | — |
Collateralized mortgage obligations - government issued |  | 14,505 |  |  | 57 |  |  | (31 | ) |  | 14,531 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 9,480 |  |  | 74 |  |  | (19 | ) |  | 9,535 |
|  | $ | 41,563 |  |  | $ | 216 |  |  | $ | (85 | ) |  | $ | 41,694 |
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 FHLMC and the FNMA. Asset-backed securities represent securities issued by the Student Loan Marketing Association (“SLMA”) and 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. There were no sales of securities available-for-sale during the years ended December 31, 2015 and 2014. At December 31, 2015 and 2014, securities with a fair value of $23.0 million and $32.7 million, respectively, were pledged to secure interest rate swap contracts, outstanding FHLB advances, if any, and additional FHLB availability. The amortized cost and estimated fair value of securities by contractual maturity at December 31, 2015 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay obligations without call or prepayment penalties.
|  | Available-for-Sale |  | Held-to-Maturity
|  | Amortized Cost |  | Estimated Fair Value |  | Amortized Cost |  | Estimated Fair Value
|  | (In Thousands)
Due in one year or less |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Due in one year through five years |  | 13,511 |  |  | 13,505 |  |  | 3,890 |  |  | 3,899 |
Due in five through ten years |  | 88,690 |  |  | 88,902 |  |  | 13,643 |  |  | 13,950 |
Due in over ten years |  | 38,003 |  |  | 38,141 |  |  | 19,749 |  |  | 19,709 |
|  | $ | 140,204 |  |  | $ | 140,548 |  |  | $ | 37,282 |  |  | $ | 37,558 |
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 December 31, 2015 and 2014. At December 31, 2015, the Corporation owned 87 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 December 31, 2015, the Corporation held 11 available-for-sale securities that had been in a continuous 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. It is expected that the Corporation will recover the entire amortized cost basis of each 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 years ended December 31, 2015 and 2014. A summary of unrealized loss information for available-for-sale securities, categorized by security type follows:
|  | 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 |
|  | As of December 31, 2014
|  | 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 |  | $ | 3,486 |  |  | $ | 12 |  |  | $ | 5,479 |  |  | $ | 69 |  |  | $ | 8,965 |  |  | $ | 81 |
Municipal obligations |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Asset-backed securities |  | $ | — |  |  | $ | — |  |  | $ | 1,510 |  |  | $ | 4 |  |  | $ | 1,510 |  |  | $ | 4 |
Collateralized mortgage obligations - government issued |  | 9,201 |  |  | 50 |  |  | 9,536 |  |  | 206 |  |  | 18,737 |  |  | 256 |
Collateralized mortgage obligations - government-sponsored enterprises |  | 29,498 |  |  | 97 |  |  | 4,993 |  |  | 129 |  |  | 34,491 |  |  | 226 |
|  | $ | 42,185 |  |  | $ | 159 |  |  | $ | 21,518 |  |  | $ | 408 |  |  | $ | 63,703 |  |  | $ | 567 |
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 December 31, 2015 and 2014. At December 31, 2015, the Corporation held 14 held-to-maturity securities that were in an unrecognized loss position. Such securities have not experienced credit rating downgrades; however, they have primarily declined in value due to the current interest rate environment. There were three held-to-maturity securities that had been in a continuous loss position for twelve months or greater as of December 31, 2015. 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 years ended December 31, 2015 and 2014. A summary of unrecognized loss information for securities held-to-maturity, categorized by security type follows:
|  | 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 |
|  | As of December 31, 2014
|  | 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 |  | $ | 1,490 |  |  | $ | 17 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,490 |  |  | $ | 17 |
Municipal obligations |  | 2,222 |  |  | 18 |  |  | $ | — |  |  | $ | — |  |  | 2,222 |  |  | 18 |
Collateralized mortgage obligations - government issued |  | 3,247 |  |  | $ | 31 |  |  | $ | — |  |  | $ | — |  |  | 3,247 |  |  | 31 |
Collateralized mortgage obligations - government-sponsored enterprises |  | $ | 3,076 |  |  | $ | 19 |  |  | $ | — |  |  | $ | — |  |  | 3,076 |  |  | 19 |
|  | $ | 10,035 |  |  | $ | 85 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,035 |  |  | $ | 85 |

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