Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2012

Fair Value Disclosures [Abstract]

Schedule of fair value assets measured on a non-recurring basis

The following table presents our assets measured at fair value on a non-recurring basis for each hierarchy level and represents only those assets whose carrying values were adjusted to fair value during the fiscal year ended September 30, 2012 and 2011(in thousands):

	Level 1	Level 2	Level 3	Total
Year Ended September 30, 2012
Development projects in progress	—	—	20,857	20,857
Land held for sale	—	—	1,973	1,973
Year Ended September 30, 2011
Development projects in progress	—	—	49,759	49,759
Right to purchase land	—	—	11,651	11,651

Schedule of carrying values and estimated fair values of other financial assets and liabilities

The carrying values and estimated fair values of other financial assets and liabilities were as follows (in thousands):

	As of September 30, 2012				As of September 30, 2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Senior Notes	$	1,201,067	$	1,228,745	$	1,132,152	$	856,634
Mandatory Convertible Subordinated Notes	9,402		7,465		57,500		22,747
Junior Subordinated Notes	51,603		51,603		49,537		49,537
	$	1,262,072	$	1,287,813	$	1,239,189	$	928,918