Share-based Compensation (Details) In Thousands, unless otherwise specified		3 Months Ended				3 Months Ended	87 Months Ended		3 Months Ended		116 Months Ended	3 Months Ended
	Sep. 30, 2012 item	Sep. 30, 2012 Restricted stock	Sep. 30, 2011 Restricted stock	Jun. 30, 2012 Restricted stock	Jun. 30, 2011 Restricted stock	Sep. 30, 2012 2006 LTIP	Sep. 30, 2012 2006 LTIP	Sep. 30, 2012 2011 LTIP	Sep. 30, 2012 2011 LTIP Restricted stock	Sep. 30, 2012 2003 Plan	Sep. 30, 2012 2003 Plan	Sep. 30, 2012 Old Plan
Stock-based Compensation
Number of share-based employee compensation plans	4
Options outstanding (in shares)	2,610
Options issued (in shares)						1,565				862		183
Shares authorized						2,500	2,500	1,500		1,125	1,125
Options exercised (in shares)							190				60
Nonvested restricted shares outstanding		73	148	74	155	73	73
Shares already vested under a plan since its inception		38	37			635			3
Shares for future issuances						37	37	1,497		203	203