| Note 1 - Basis of Presentation and Summary of Significant Accounting Policies - Changes in Carrying Amount of Goodwill (Details) $ in Thousands | 3 Months Ended | 
|---|---|
| Sep. 30, 2015  USD ($) | |
| Beginning balance | $ 390,638 | 
| Acquisitions (net of cash acquired) | 43,000 | 
| Currency translation | (6,321) | 
| Ending balance | $ 427,317 | 
| X | ||||||||||
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 | 
| X | ||||||||||
| 
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 | 
| X | ||||||||||
| 
- Definition Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 |