Subsequent Events (Details) (Subsequent Event [Member], USD $)	3 Months Ended
Sep. 12, 2013
Subsequent Event [Member]
Subsequent Event [Line Items]
Self-tender offer to repurchase common stock	$ 40,000,000

Amount of a stock repurchase plan authorized by an entity's Board of Directors.

No definition available.

Name:	us-gaap_StockRepurchaseProgramAuthorizedAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration