Financial Instruments (Details) (USD $) | Sep. 30, 2013 | Jun. 30, 2013 |
In Thousands, unless otherwise specified |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | $11,153 | $13,321 |
Fair Value, Inputs, Level 1 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 51 | 25 |
Fair Value, Inputs, Level 2 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 11,102 | 13,296 |
Fair Value, Inputs, Level 3 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | ' | ' |
Mutual Funds [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 51 | 25 |
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 51 | 25 |
Mutual Funds [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | ' | ' |
Fixed Deposits And Certificates Of Deposit [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 6,017 | 9,581 |
Fixed Deposits And Certificates Of Deposit [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 6,017 | 9,581 |
Fixed Deposits And Certificates Of Deposit [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | ' | ' |
Variable Rate Demand Obligation [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 1,850 | 1,715 |
Variable Rate Demand Obligation [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 1,850 | 1,715 |
Variable Rate Demand Obligation [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | ' | ' |
Repurchase Agreements [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 3,235 | 2,000 |
Repurchase Agreements [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 3,235 | 2,000 |
Repurchase Agreements [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | ' | ' |