| Financial Information Relating to Geographic Areas (Detail) (USD $) In Thousands | 12 Months Ended | ||
|---|---|---|---|
| Jun. 30, 2011 | Jun. 30, 2010 | Jun. 30, 2009 | |
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| External sales | $ 289,962 | $ 269,047 | $ 263,956 | 
| Long-lived assets | 96,717 | 97,923 | 100,883 | 
| UNITED STATES | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| External sales | 159,857 | 148,137 | 147,271 | 
| Long-lived assets | 88,802 | 91,554 | 93,571 | 
| Europe | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| External sales | 83,676 | 78,496 | 79,381 | 
| Long-lived assets | 7,819 | 6,299 | 7,214 | 
| CHINA | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| External sales | 8,299 | 6,792 | 5,645 | 
| Long-lived assets | 96 | 70 | 98 | 
| Other Areas | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| External sales | $ 38,130 | $ 35,622 | $ 31,659 |