Estimated Fair Value of Financial Instruments (Tables)

9 Months Ended

Mar. 31, 2016

Estimated Fair Value of Financial Instruments [Abstract]

Financial Instruments Recorded on Condensed Consolidated Balance Sheets

Cash equivalents and marketable securities:

	($ in thousands)
March 31, 2016	Level 1		Level 2		Level 3		Total
Money Market Funds	$	8,659	$	—	$	—	$	8,659
Marketable Securities:
U.S. Treasury Bonds		6,951		—		—		6,951
Certificate of Deposits		4,253		—		—		4,253
U.S. Government Sponsored Agencies		22,259		—		—		22,259
Corporate Debt Securities		16,907		—		—		16,907
Total	$	59,029	$	—	$	—	$	59,029

	($ 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 March 31, 2016				As of June 30, 2015
	Carrying		Estimated		Carrying		Estimated
	Amount		Fair Value		Amount		Fair Value
Convertible Senior Notes	$	97,172	$	76,223	$	96,625	$	103,800