Financial Instruments (Details) (USD $) | Mar. 31, 2014 | Jun. 30, 2013 |
In Thousands, unless otherwise specified |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | $14,268 | $13,321 |
Fair Value, Inputs, Level 1 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 11 | 25 |
Fair Value, Inputs, Level 2 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 14,257 | 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 | 11 | 25 |
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 11 | 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 | 11,196 | 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 | 11,196 | 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 | 1,325 | 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 | 1,325 | 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 | 1,736 | 2,000 |
Repurchase Agreements [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | 1,736 | 2,000 |
Repurchase Agreements [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ' | ' |
Short-term Investments | ' | ' |