The amortized cost, gross unrealized gains, gross unrealized losses, and approximate fair value of securities available for sale consisted of the following:

The amortized cost and estimated fair value of investment and mortgage-backed securities, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalties.

	December 31, 2014
		Estimated
(dollars in thousands)	Amortized	Fair
	Cost	Value
Available for Sale:
Within one year	$1,032	$1,037
After one year but less than five years	16,142	16,107
After five years but less than ten years	18,685	18,996
After ten years	28,013	28,882
Total investment securities	63,872	65,022
Mortgage-backed securities	80,019	81,008
Total investments and mortgage-backed securities	$143,891	$146,030

The following tables show our investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31 and June 30, 2014:

Other securities. At December 31, 2014, there were three pooled trust preferred securities with an estimated fair value of $733,000 and unrealized losses of $717,000 in a continuous unrealized loss position for twelve months or more. These unrealized losses were primarily due to the long-term nature of the pooled trust preferred securities, a lack of demand or inactive market for these securities, and concerns regarding the financial institutions that have issued the underlying trust preferred securities. Rules adopted by the federal banking agencies in December 2013 to implement Section 619 of the Dodd-Frank Act (the “Volcker Rule”) generally prohibit banking entities from engaging in proprietary trading and from investing in, sponsoring, or having certain relationships with a hedge fund or private equity fund. The pooled trust preferred securities owned by the Company were included in a January 2014 listing of securities which the agencies considered to be grandfathered with regard to these prohibitions; as such, banking entities are permitted to retain their interest in these securities, provided the interest was acquired on or before December 10, 2013, unless acquired pursuant to a merger or acquisition.

The December 31, 2014, cash flow analysis for these three securities indicated it is probable the Company will receive all contracted principal and related interest projected. The cash flow analysis used in making this determination was based on anticipated default, recovery, and prepayment rates, and the resulting cash flows were discounted based on the yield anticipated at the time the securities were purchased. Other inputs include the actual collateral attributes, which include credit ratings and other performance indicators of the underlying financial institutions, including profitability, capital ratios, and asset quality. Assumptions for these three securities included annualized prepayments of 1%; no recoveries on issuers currently in default; recoveries of 39 to 100 percent on currently deferred issuers within the next two years; new defaults of 50 basis points annually; and recoveries of 10% of new defaults.

One of these three securities has continued to receive cash interest payments in full since our purchase; the second of the three securities received principal-in-kind (PIK) for a period of time following the recession and financial crisis which began in 2008, but resumed interest payments during fiscal 2014. Our cash flow analysis indicates that interest payments are expected to continue for these two securities. Because the Company does not intend to sell these securities and it is not more-likely-than-not that the Company will be required to sell these securities prior to recovery of their amortized cost basis, which may be maturity, the Company does not consider these investments to be other-than-temporarily impaired at December 31, 2014.

For the last of these three securities, the Company is receiving principal-in-kind (PIK), in lieu of cash interest. Pooled trust preferred securities generally allow, under the terms of the issue, for issuers to defer interest for up to five consecutive years. After five years, if not cured, the issuer is considered to be in default and the trustee may demand payment in full of principal and accrued interest. Issuers are also considered to be in default in the event of the failure of the issuer or a subsidiary. Both deferred and defaulted issuers are considered non-performing, and the trustee calculates, on a quarterly or semi-annual basis, certain coverage tests prior to the payment of cash interest to owners of the various tranches of the securities. The tests must show that performing collateral is sufficient to meet requirements for senior tranches, both in terms of cash flow and collateral value, before cash interest can be paid to subordinate tranches. If the tests are not met, available cash flow is diverted to pay down the principal balance of senior tranches until the coverage tests are met, before cash interest payments to subordinate tranches may resume. The Company is receiving PIK for this security due to failure of the required coverage tests described above at senior tranche levels of the security. The risk to holders of a tranche of a security in PIK status is that the pool’s total cash flow will not be sufficient to repay all principal and accrued interest related to the investment. The impact of payment of PIK to subordinate tranches is to strengthen the position of senior tranches, by reducing the senior tranches’ principal balances relative to available collateral and cash flow, while increasing principal balances, decreasing cash flow, and increasing credit risk to the tranches receiving PIK. For our security in receipt of PIK, the principal balance is increasing, cash flow has stopped, and, as a result, credit risk is increasing. The Company expects this security to remain in PIK status for a period of two years. Despite these facts, because the Company does not intend to sell this security and it is not more-likely-than-not that the Company will be required to sell this security prior to recovery of its amortized cost basis, which may be maturity, the Company does not consider this investment to be other-than-temporarily impaired at December 31, 2014.

At December 31, 2008, analysis of a fourth pooled trust preferred security indicated other-than-temporary impairment (OTTI). The loss recognized at that time reduced the amortized cost basis for the security, and as of December 31, 2014, the estimated fair value of the security exceeds the new, lower amortized cost basis.

The Company does not believe any other individual unrealized loss as of December 31, 2014, represents OTTI. However, the Company could be required to recognize OTTI losses in future periods with respect to its available for sale investment securities portfolio. The amount and timing of any additional OTTI will depend on the decline in the underlying cash flows of the securities. Should the impairment of any of these securities become other-than-temporary, the cost basis of the investment will be reduced and the resulting loss recognized in the period the other-than-temporary impairment is identified.

Credit losses recognized on investments. As described above, one of the Company’s investments in trust preferred securities experienced fair value deterioration due to credit losses, but is not otherwise other-than-temporarily impaired. During fiscal 2009, the Company adopted ASC 820, formerly FASB Staff Position 157-4, “Determining Fair Value When the Volume and Level of Activity for the Asset or Liability Have Significantly Decreased and Identifying Transactions That Are Not Orderly.” The following table provides information about the trust preferred security for which only a credit loss was recognized in income and other losses are recorded in other comprehensive income (loss) for the six-month periods ended December 31, 2014 and 2013.

	Accumulated Credit Losses
	Six-Month Period Ended
(dollars in thousands)	December 31,
	2014	2013
Credit losses on debt securities held
Beginning of period	$375	$375
Additions related to OTTI losses not previously recognized	-	-
Reductions due to sales	-	-
Reductions due to change in intent or likelihood of sale	-	-
Additions related to increases in previously-recognized OTTI losses	-	-
Reductions due to increases in expected cash flows	(5)	-
End of period	$370	$375