Securities

The amortized cost and 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 September 30, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In Thousands)
Available-for-sale:
U.S. Government agency obligations - government-sponsored enterprises	$	3,799	$	11	$	(3	)	$	3,807
Municipal obligations	9,342		13		(23		)	9,332
Collateralized mortgage obligations - government issued	22,750		301		(149		)	22,902
Collateralized mortgage obligations - government-sponsored enterprises	95,608		165		(684		)	95,089
	$	131,499	$	490	$	(859	)	$	131,130



	As of December 31, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In Thousands)
Available-for-sale:
U.S. Government agency obligations - government-sponsored enterprises	$	6,298	$	7	$	(10	)	$	6,295
Municipal obligations	8,246		2		(92		)	8,156
Asset-backed securities	1,116		—		(35		)	1,081
Collateralized mortgage obligations - government issued	30,936		423		(146		)	31,213
Collateralized mortgage obligations - government-sponsored enterprises	99,865		252		(969		)	99,148
	$	146,461	$	684	$	(1,252	)	$	145,893

The amortized cost and fair value of securities held-to-maturity and the corresponding amounts of gross unrealized gains and losses were as follows:



	As of September 30, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In Thousands)
Held-to-maturity:
U.S. Government agency obligations - government-sponsored enterprises	$	1,498	$	—	$	(5	)	$	1,493
Municipal obligations	21,928		443		(14		)	22,357
Collateralized mortgage obligations - government issued	9,601		16		(33		)	9,584
Collateralized mortgage obligations - government-sponsored enterprises	5,846		12		(18		)	5,840
	$	38,873	$	471	$	(70	)	$	39,274



	As of December 31, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In Thousands)
Held-to-maturity:
U.S. Government agency obligations - government-sponsored enterprises	$	1,497	$	2	$	(5	)	$	1,494
Municipal obligations	21,173		62		(78		)	21,157
Collateralized mortgage obligations - government issued	9,148		17		(38		)	9,127
Collateralized mortgage obligations - government-sponsored enterprises	6,794		6		(58		)	6,742
	$	38,612	$	87	$	(179	)	$	38,520

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”). 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. Asset-backed securities represent securities issued by the Student Loan Marketing Association (“SLMA”) which are 97% guaranteed by the U.S. Government. Collateralized mortgage obligations - government issued represent securities guaranteed by the Government National Mortgage Association. Collateralized mortgage obligations - government-sponsored enterprises include securities guaranteed by the FHLMC and the FNMA. There were 14 sales of available-for-sale securities that occurred during the nine months ended September 30, 2017 and three sales of available-for-sale securities that occurred during the nine months ended September 30, 2016.

At September 30, 2017 and December 31, 2016, securities with a fair value of $1.9 million and $22.4 million, respectively, were pledged to secure interest rate swap contracts, outstanding Federal Home Loan Bank (“FHLB”) advances and additional FHLB availability.

The amortized cost and fair value of securities by contractual maturity at September 30, 2017 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations with or without call or prepayment penalties.



	Available-for-Sale				Held-to-Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In Thousands)
Due in one year or less	$	6,785	$	6,783	$	—	$	—
Due in one year through five years	13,156		13,194		11,177		11,326
Due in five through ten years	48,051		48,168		13,258		13,495
Due in over ten years	63,507		62,985		14,438		14,453
	$	131,499	$	131,130	$	38,873	$	39,274

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 September 30, 2017 and December 31, 2016. At September 30, 2017, the Corporation held 106 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 September 30, 2017, the Corporation held 56 available-for-sale securities that had been in a continuous unrealized loss position for twelve months or greater.

The Corporation 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 unaudited Consolidated Statements of Income for the nine months ended September 30, 2017 and 2016.

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 September 30, 2017
	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	$	800	$	—	$	1,997	$	3	$	2,797	$	3
Municipal obligations	1,916		9		3,011		14		4,927		23
Collateralized mortgage obligations - government issued	3,679		14		6,185		135		9,864		149
Collateralized mortgage obligations - government-sponsored enterprises	32,752		121		31,883		563		64,635		684
	$	39,147	$	144	$	43,076	$	715	$	82,223	$	859



	As of December 31, 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	$	1,991	$	10	$	—	$	—	$	1,991	$	10
Municipal obligations	7,207		89		406		3		7,613		92
Asset-backed securities	—		$	—	1,081		35		1,081		35
Collateralized mortgage obligations - government issued	10,552		130		493		16		11,045		146
Collateralized mortgage obligations - government-sponsored enterprises	54,843		931		1,819		38		56,662		969
	$	74,593	$	1,160	$	3,799	$	92	$	78,392	$	1,252

The tables below show the Corporation’s gross unrealized 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 September 30, 2017 and December 31, 2016. At September 30, 2017, the Corporation held 14 held-to-maturity 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. There were seven held-to-maturity securities that had been in a continuous loss position for twelve months or greater as of September 30, 2017. It is expected that the Corporation will recover the entire amortized cost basis of each held-to-maturity security based upon an evaluation of aforementioned factors. Accordingly, no other-than-temporary impairment was recorded in the unaudited Consolidated Statements of Income for the nine months ended September 30, 2017 and 2016.

A summary of unrealized loss information for securities held-to-maturity, categorized by security type and length of time for which the security has been in a continuous unrealized loss position, follows:



	As of September 30, 2017
	Less than 12 Months				12 Months or Longer				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(In Thousands)
Held-to-maturity:
U.S. Government agency obligations - government-sponsored enterprises	$	1,000	$	5	$	—	$	—	$	1,000	$	5
Municipal obligations	853		11		260		3		1,113		14
Collateralized mortgage obligations - government issued	2,806		8		3,804		25		6,610		33
Collateralized mortgage obligations - government-sponsored enterprises	—		—		1,927		18		1,927		18
	$	4,659	$	24	$	5,991	$	46	$	10,650	$	70



	As of December 31, 2016
	Less than 12 Months				12 Months or Longer				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(In Thousands)
Held-to-maturity:
U.S. Government agency obligations - government-sponsored enterprises	$	1,000	$	5	$	—	$	—	$	1,000	$	5
Municipal obligations	9,472		78		—		—		9,472		78
Collateralized mortgage obligations - government issued	6,980		38		—		—		6,980		38
Collateralized mortgage obligations - government-sponsored enterprises	4,682		58		—		—		4,682		58
	$	22,134	$	179	$	—	$	—	$	22,134	$	179