Severance (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Severance (Textual) [Abstract]
Charges for severance for former employees	$ 1.7	$ 0.2
Severance charges related to accrued severance and benefits	1.3
Non-cash charges related to the vesting of certain unvested stock options and restricted common stock	$ 0.4

The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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