Other Assets (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended
	Dec. 31, 2010	Nov. 30, 2011	Nov. 30, 2010
Other Assets
Operating properties, net		$ 0	$ 71,938
Cash surrender value of insurance contracts		59,718	59,103
Property and equipment, net		7,801	9,596
Debt issuance costs		4,219	5,254
Prepaid expenses		2,214	3,033
Net deferred tax assets		1,152	1,152
Total		75,104	150,076
Other Assets (Textual) [Abstract]
Proceeds from sale of operating property	80,600	80,600
Gain on sale of multi-level residential rental property	$ 8,800	$ 8,825