Business Segments (Details 2) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Other financial information
Revenues	$ 35,719	$ 30,138	$ 109,261	$ 88,438
Interest income	8	4	28	21
Interest expense	3,419	1,892	9,405	5,280
Capital expenditures	5,847	4,306	12,893	7,424
Investment in non-consolidated REITs	88,225	89,995	88,225	89,995	89,327
Identifiable assets	1,345,784	1,189,197	1,345,784	1,189,197	1,238,735
Real Estate Operations
Other financial information
Revenues	34,716	29,872	101,392	86,611
Interest income	3	4	19	20
Interest expense	3,419	1,892	9,405	5,280
Capital expenditures	5,752	4,219	12,798	7,275
Investment in non-consolidated REITs	88,225	89,995	88,225	89,995
Identifiable assets	1,336,269	1,184,582	1,336,269	1,184,582
Investment Banking/Investment Services
Other financial information
Revenues	1,003	266	7,869	1,827
Interest income	5		9	1
Capital expenditures	95	87	95	149
Identifiable assets	$ 9,515	$ 4,615	$ 9,515	$ 4,615

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The cost of borrowed funds accounted for as interest that was charged against earnings during the period.

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