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Fair Value Measurements (Tables) | 3 Months Ended
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Dec. 31, 2017
Fair Value Disclosures [Abstract] |
Schedule of fair value assets measured on a recurring and non-recurring basis | The following table presents the period-end balances of our assets measured at fair value on a recurring basis, and the impairment-date fair value of certain assets measured at fair value on a non-recurring basis, for each hierarchy level. These balances represent only those assets whose carrying values were adjusted to fair value during the periods presented:
(In thousands) | Level 1 |  | Level 2 |  | Level 3 |  | Total
Three Months Ended December 31, 2017 |  |  |  |  |  |  |
Deferred compensation plan assets (a) | $ | — |  |  | $ | 1,357 |  |  | $ | — |  |  | $ | 1,357 |
Land held for sale (b) | — |  |  | — |  |  | 642 |  |  | 642 |
Three Months Ended December 31, 2016 |  |  |  |  |  |  |
Deferred compensation plan assets (a) | $ | — |  |  | $ | 1,006 |  |  | $ | — |  |  | $ | 1,006 |
As of September 30, 2017 |  |  |  |  |  |  |
Deferred compensation plan assets (a) | $ | — |  |  | $ | 1,114 |  |  | $ | — |  |  | $ | 1,114 |
Development projects in progress (b) | — |  |  | — |  |  | 3,791 |  |  | 3,791 |
Land held for sale (b) | — |  |  | — |  |  | 325 |  |  | 325 |
(a) Measured at fair value on a recurring basis. (b) Measured at fair value on a non-recurring basis.
Schedule of carrying values and estimated fair values of other financial assets and liabilities | The following table presents the carrying value and estimated fair value of certain of our other financial liabilities as of December 31, 2017 and September 30, 2017:
| As of December 31, 2017 |  | As of September 30, 2017
(In thousands) | Carrying Amount (a) |  | Fair Value |  | Carrying Amount (a) |  | Fair Value
Senior Notes (b) | $ | 1,257,902 |  |  | $ | 1,338,675 |  |  | $ | 1,259,840 |  |  | $ | 1,355,657 |
Junior Subordinated Notes | 62,453 |  |  | 62,453 |  |  | 61,937 |  |  | 61,937 |
| $ | 1,320,355 |  |  | $ | 1,401,128 |  |  | $ | 1,321,777 |  |  | $ | 1,417,594 |
(a) Carrying amounts are net of unamortized debt premium/discounts, debt issuance costs or accretion. (b) The estimated fair value for our publicly-held Senior Notes has been determined using quoted market rates (Level 2).

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- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=66048111&loc=SL7498348-110258 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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