Operations by Industry Segments and Geographic Area - Schedule of Long-Lived Assets, Excluding Deferred Tax Assets and Intangible Assets, Based on Geographic Designation (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014
Long-lived assets
Long-lived assets	$ 47,897	$ 46,848
United States [Member]
Long-lived assets
Long-lived assets	37,866	36,856
United Kingdom [Member]
Long-lived assets
Long-lived assets	6,969	6,611
Continental Europe [Member]
Long-lived assets
Long-lived assets	2,853	3,224
Asia-Pacific [Member]
Long-lived assets
Long-lived assets	$ 209	$ 157