Summary of Significant Accounting Policies - Revenues by Geographic Area (Details) (USD $)	3 Months Ended								12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2014 Segment	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Number of geographic segments									2
Revenues from unaffiliated customers
Total revenues	$ 56,038,000	$ 55,064,000	$ 51,538,000	$ 51,328,000	$ 51,511,000	$ 50,370,000	$ 53,438,000	$ 52,859,000	$ 213,968,000	$ 208,178,000	$ 126,183,000
Americas
Revenues from unaffiliated customers
Total revenues									141,227,000	133,046,000	90,122,000
Asia / Pacific
Revenues from unaffiliated customers
Total revenues									72,741,000	75,132,000	36,061,000
United States
Segment Reporting Information [Line Items]
Long-lived assets	9,800,000				4,800,000				9,800,000	4,800,000
Revenues from unaffiliated customers
Total revenues									136,758,000	131,508,000	89,230,000
Japan
Segment Reporting Information [Line Items]
Long-lived assets	2,300,000				3,000,000				2,300,000	3,000,000
Revenues from unaffiliated customers
Total revenues									$ 61,872,000	$ 69,492,000	$ 35,449,000