Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Changes in the carrying amount of goodwill
Balance at the beginning of the period				$ 57,848	$ 58,054	$ 58,054
Currency translation				(106)		(206)
Balance at the end of the period	$ 57,742			57,742		57,848
Impairment of goodwill		$ 0
Amortization expense	2,000		$ 2,000	6,000	$ 6,000
Estimated future amortization expense of purchased intangible assets
2017 (remaining 3 months)	1,646			1,646
Developed technology
Changes in the carrying amount of goodwill
Gross Carrying Amount	46,743			46,743		46,743
Accumulated Amortization	(45,097)			(45,097)		(39,132)
Net Amount	$ 1,646			$ 1,646		$ 7,611
Developed technology | Minimum
Changes in the carrying amount of goodwill
Useful Lives				5 years
Developed technology | Maximum
Changes in the carrying amount of goodwill
Useful Lives				6 years