Share-based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified		12 Months Ended					12 Months Ended	96 Months Ended	12 Months Ended				125 Months Ended	12 Months Ended
	Jun. 30, 2013 item	Jun. 30, 2013 Maximum	Jun. 30, 2013 Restricted stock	Jun. 30, 2012 Restricted stock	Jun. 30, 2011 Restricted stock	Jun. 30, 2010 Restricted stock	Jun. 30, 2013 2006 LTIP	Jun. 30, 2013 2006 LTIP	Jun. 30, 2013 2006 LTIP Restricted stock	Jun. 30, 2013 2011 LTIP	Jun. 30, 2013 2011 LTIP Restricted stock	Jun. 30, 2013 2003 Plan	Jun. 30, 2013 2003 Plan	Jun. 30, 2013 Old Plan
Stock-based Compensation
Number of share-based employee compensation plans	4
Options outstanding (in shares)	2,300,000
Options issued (in shares)							1,300,000			463,000		596,000
Shares authorized							2,500,000	2,500,000		1,500,000		1,100,000	1,100,000
Options exercised (in shares)								496,000					222,000
Nonvested restricted shares outstanding				74,000	155,000	270,000
Shares already vested under a plan since its inception			110,000	113,000	144,000				708,000		3,000
Shares for future issuances							32,000	32,000		1,000,000
Other disclosures
Share-based compensation awards vesting period		3 years
Share-based compensation awards maximum contractual term		10 years
Total unrecognized compensation cost related to non-vested share-based compensation awards granted under the Plans			$ 1.4
Weighted average period during which the cost is expected to be recognized			1 year 10 months 24 days
Number of further shares authorized to be issued														0