Commitments and Contingencies (Details) (USD $) In Thousands	12 Months Ended
Jun. 30, 2011
Commitments and Contingencies (Textuals) [Abstract]
Duration of bonds	20 years
Cuyahoga County and the Cleveland Cuyahoga County Port Authority [Member]
Guarantor Obligations [Line Items]
Repayment Guarantee of taxable development revenue bond	$ 4,600

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 45
-Paragraph 13
-Subparagraph b

Name:	us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant