5. Auction Rate Securities

Our ARS investments, which are included in non-current other assets in the condensed consolidated balance sheets, have failed to settle in auctions beginning in 2007. These investments are not liquid, and in the event we need to access these funds, we will not be able to do so without a loss of principal, unless redeemed by the issuers or a future auction on these investments is successful. During the three months ended September 30, 2015, $0.6 million of our ARS investments were redeemed at par value.

As there are currently no active markets for our various failed ARS investments, we have estimated the fair value of these investments as of September 30, 2015 using a trinomial discounted cash flow analysis. The analysis considered, among others, the following factors:

the collateral underlying the security investments;

the creditworthiness of the counterparty;

the timing of expected future cash flows;

the probability of a successful auction in a future period;

the underlying structure of each investment;

the present value of future principal and interest payments discounted at rates considered to reflect current market conditions;

a consideration of the probabilities of default, a successful future auction, or redemption at par for each period; and

estimates of the recovery rates in the event of default for each investment.

When possible, our failed ARS investments were compared to other observable market data or securities with similar characteristics. Our estimate of the fair value of our ARS investments could fluctuate from period to period depending on future market conditions.

We have ARS investments with a fair value of $12.5 million maturing in fiscal year 2018 and $2.5 million fair value with no maturity date. As of September 30, 2015, all of our ARS investments are below investment grade.

The various types of ARS investments we held as of September 30, 2015, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain, and fair value, consisted of the following (in millions):

	Original Cost Basis		Other-than- temporary Impairment in Retained Earnings				New Cost Basis		Unrealized Gain		Fair Value
Credit linked notes	$	13.5	$	(5.6	)	⁽¹⁾	$	7.9	$	4.6	$	12.5
Preferred stock		5.0		(5.0	)			-		2.5		2.5
Total ARS	$	18.5	$	(10.6	)		$	7.9	$	7.1	$	15.0

(1) Other-than-temporary impairment in retained earnings is partially offset by cumulative accretion of $3.1 million on non-current investments. Accretion is reclassified from accumulated other comprehensive income and recorded in the condensed consolidated statements of income as non-cash interest income.

The various types of ARS investments we held as of June 30, 2015, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain, and fair value, consisted of the following (in millions):

	Original Cost Basis		Other-than- temporary Impairment in Retained Earnings				New Cost Basis		Unrealized Gain		Fair Value
Credit linked notes	$	13.5	$	(6.1	)	⁽¹⁾	$	7.4	$	5.0	$	12.4
Preferred stock		5.0		(5.0	)			-		2.8		2.8
Municipals		0.6		(0.1	)			0.5		0.1		0.6
Total ARS	$	19.1	$	(11.2	)		$	7.9	$	7.9	$	15.8

(1) Other-than-temporary impairment in retained earnings is partially offset by cumulative accretion of $2.7 million on non-current investments. Accretion is reclassified from accumulated other comprehensive income and recorded in the condensed consolidated statements of income as non-cash interest income.

All of our ARS investments are accounted for as non-current as the maturity dates are more than 12 months from the balance sheet date. We do not intend to sell the ARS investments before maturity and it is not more likely than not that we will be required to sell the investments before the recovery of the amortized cost basis.