Estimated Fair Value of Financial Instruments (Tables)

12 Months Ended

Jun. 30, 2016

Estimated Fair Value of Financial Instruments [Abstract]

Financial Instruments Recorded on Condensed Consolidated Balance Sheets

	($ in thousands)
June 30, 2016	Level 1		Level 2		Level 3		Total
Money Market Funds	$	10,012	$	—	$	—	$	10,012
Marketable Securities:
U.S. Treasury Bonds		5,065		—		—		5,065
Certificate of Deposits		3,003		—		—		3,003
U.S. Government Sponsored Agencies		14,342		—		—		14,342
Corporate Debt Securities		15,014		—		—		15,014
Total	$	47,436	$	—	$	—	$	47,436

	($ in thousands)
June 30, 2015	Level 1		Level 2		Level 3		Total
Money Market Funds	$	10,138	$	—	$	—	$	10,138
Marketable Securities:
U.S. Treasury Bonds		13,389		—		—		13,389
Certificate of Deposits		6,004		—		—		6,004
U.S. Government Sponsored Agencies		40,715		—		—		40,715
Corporate Debt Securities		26,058		—		—		26,058
Total	$	96,304	$	—	$	—	$	96,304

Schedule of Carrying Amounts and Estimated Fair Values (Level 2) of Debt Instruments

The carrying amounts and estimated fair values (Level 2) of debt instruments are as follows (in thousands):

	As of June 30, 2016				As of June 30, 2015
	Carrying		Estimated		Carrying		Estimated
	Amount		Fair Value		Amount		Fair Value
Convertible Senior Notes	$	97,354	$	71,359	$	96,625	$	103,800