Summary of Significant Accounting Policies - Revenues by Geographic Area (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Sep. 30, 2013 USD ($)	Jun. 30, 2015 USD ($) Segment	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)
Segment Reporting Information [Line Items]
Number of geographic segments | Segment									2
Revenues from unaffiliated customers
Total revenues	$ 45,301	$ 45,155	$ 48,247	$ 51,633	$ 56,038	$ 55,064	$ 51,538	$ 51,328	$ 190,336	$ 213,968	$ 208,178
Americas
Revenues from unaffiliated customers
Total revenues									138,118	141,227	133,046
Asia / Pacific
Revenues from unaffiliated customers
Total revenues									52,218	72,741	75,132
United States
Segment Reporting Information [Line Items]
Long-lived assets	6,500				9,800				6,500	9,800
Revenues from unaffiliated customers
Total revenues									132,831	136,758	131,508
Japan
Segment Reporting Information [Line Items]
Long-lived assets	$ 1,500				$ 2,300				1,500	2,300
Revenues from unaffiliated customers
Total revenues									$ 41,428	$ 61,872	$ 69,492