FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Summary Of Financial Assets At Fair Value) (Details) (USD $) | Dec. 31, 2013 | Jun. 30, 2013 |
In Thousands, unless otherwise specified |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | $78,052 | $148,046 |
Level 1 [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 5,136 | 60,352 |
Level 2 [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 72,916 | 87,694 |
Estimate of Fair Value, Fair Value Disclosure [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 78,052 | 148,046 |
U.S. Government Debt Securities [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 5,136 | 65,352 |
U.S. Government Debt Securities [Member] | Level 1 [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 5,136 | 60,352 |
U.S. Government Debt Securities [Member] | Level 2 [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 0 | 5,000 |
U.S. Government Debt Securities [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 5,136 | 65,352 |
Domestic [Member] | Time Deposits [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 12,991 | 53,862 |
Domestic [Member] | Time Deposits [Member] | Level 1 [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 0 | 0 |
Domestic [Member] | Time Deposits [Member] | Level 2 [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 12,991 | 53,862 |
Domestic [Member] | Time Deposits [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 12,991 | 53,862 |
International [Member] | Time Deposits [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 59,925 | 28,832 |
International [Member] | Time Deposits [Member] | Level 1 [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 0 | 0 |
International [Member] | Time Deposits [Member] | Level 2 [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | 59,925 | 28,832 |
International [Member] | Time Deposits [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | ' | ' |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] | ' | ' |
Total investments | $59,925 | $28,832 |