Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) | Jun. 30, 2014 |
In Thousands, unless otherwise specified |
Level 1 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | $1,965 |
Available for Sale Securities | 0 |
Assets measured at fair value | 1,965 |
Level 2 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 17,498 |
Available for Sale Securities | 19,050 |
Assets measured at fair value | 36,548 |
Level 3 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 0 |
Available for Sale Securities | 0 |
Assets measured at fair value | 0 |
Total | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 19,463 |
Available for Sale Securities | 19,050 |
Assets measured at fair value | 38,513 |
Money market funds | Level 1 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 1,965 |
Money market funds | Level 2 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 0 |
Money market funds | Level 3 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 0 |
Money market funds | Total | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 1,965 |
Commercial paper | Level 1 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 0 |
Available for Sale Securities | 0 |
Commercial paper | Level 2 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 9,498 |
Available for Sale Securities | 6,997 |
Commercial paper | Level 3 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 0 |
Available for Sale Securities | 0 |
Commercial paper | Total | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 9,498 |
Available for Sale Securities | 6,997 |
Variable-rate demand notes | Level 1 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 0 |
Variable-rate demand notes | Level 2 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 8,000 |
Variable-rate demand notes | Level 3 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 0 |
Variable-rate demand notes | Total | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Cash Equivalents | 8,000 |
Certificates of deposit | Level 1 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Available for Sale Securities | 0 |
Certificates of deposit | Level 2 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Available for Sale Securities | 4,165 |
Certificates of deposit | Level 3 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Available for Sale Securities | 0 |
Certificates of deposit | Total | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Available for Sale Securities | 4,165 |
Corporate bonds | Level 1 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Available for Sale Securities | 0 |
Corporate bonds | Level 2 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Available for Sale Securities | 7,888 |
Corporate bonds | Level 3 | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Available for Sale Securities | 0 |
Corporate bonds | Total | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' |
Available for Sale Securities | $7,888 |