Other Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2011
Economic development revenue bond annual fees percentage	1.75%
Economic development revenue bond term	30
Deferred assets related to guarantee	$ 3.2
Deferred liabilities related to guarantee	3.2
Loss contingency	0
Mortgage notes receivable with commitments	31.8
Theatre Properties [Member]
Commitment to fund project development	17.7
Public Charter School Property [Member]
Commitment to fund project development	$ 26.7

The payments made in the period which reduced loss contingency liabilities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349

Name:	us-gaap_LossContingencyAccrualCarryingValuePayments
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration