Marketable Investment Securities

9 Months Ended

Mar. 31, 2020

Investments Debt And Equity Securities [Abstract]

(4)	MARKETABLE INVESTMENT SECURITIES

The Company has classified its debt investment securities as available-for-sale securities. These securities are carried at estimated fair value with unrealized holding gains and losses, net of the related tax effect, included in accumulated other comprehensive loss in stockholders’ equity until realized. Gains and losses on investment security transactions are reported on the specific-identification method. Dividend and interest income are recognized when earned. The Company’s cash equivalents consist of short-term, highly liquid investments that are readily convertible to known amounts of cash. The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of security at March 31, 2020 and June 30, 2019 were as follows:

			Gross		Gross
			unrealized		unrealized
	Amortized		holding		holding			Estimated
	cost		gains		losses			fair value
At March 31, 2020:
Cash and cash equivalents:
Cash	$	103.7	$	—	$	—		$	103.7
Cash equivalents		17.3		—		—		$	17.3
Total cash and cash equivalents		121.0		—		—			121.0
Available-for-sale:
Corporate bonds and notes		61.0		0.2		(0.2	)		61.0
Municipal bonds		19.9		0.1		—			20.0
Federal agency issues		5.5		0.1		—			5.6
US government securities		16.4		0.3		—			16.7
Total	$	223.8	$	0.7	$	(0.2	)	$	224.3

			Gross		Gross
			unrealized		unrealized
	Amortized		holding		holding		Estimated
	cost		gains		losses		fair value
At June 30, 2019:
Cash and cash equivalents:
Cash	$	68.7	$	—	$	—	$	68.7
Cash equivalents		24.5		—		—		24.5
Total cash and cash equivalents		93.2		—		—		93.2
Available-for-sale:
Corporate bonds and notes		64.0		0.6		—		64.6
Municipal bonds		15.3		—		—		15.3
Federal agency issues		9.0		—		—		9.0
US government securities		9.7		—		—		9.7
Total	$	191.2	$	0.6	$	—	$	191.8

Cash, cash equivalents, and maturities of debt securities classified as available-for-sale securities are as follows at March 31, 2020:

	Amortized		Estimated
	cost		fair value
Cash	$	103.7	$	103.7
Cash equivalents		17.3		17.3
Available-for-sale:
Due within one year		60.2		60.5
Due after one year through five years		42.6		42.8
Due after five years		—		—
Total	$	223.8	$	224.3