Debt Instrument, Redemption Price, Percentage of Principal Amount Outstanding After Redemption

No definition available.

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- Definition

Line of Credit Facility, Allowed Increase in Borrowing Capacity

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

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Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

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- Details

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- Details

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- Details

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- Details

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Subsequent Event (Details) - USD ($)	1 Months Ended	3 Months Ended								12 Months Ended
Subsequent Event (Details) - USD ($)	Oct. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Subsequent Event [Line Items]
Loss on extinguishment of debt		$ (2,933,000)	$ 0	$ 15,563,000	$ 0	$ 11,393,000	$ (429,000)	$ 1,631,000	$ 828,000	$ 12,630,000	$ 13,423,000	$ 80,000
Secured Revolving Credit Facility
Subsequent Event [Line Items]
Maximum borrowing capacity		$ 180,000,000				$ 145,000,000				$ 180,000,000	$ 145,000,000
7 1/4% Senior Notes Maturing February 2023
Subsequent Event [Line Items]
Debt instrument stated interest rate (percent)		7.25%				7.25%				7.25%	7.25%
Senior Notes \| 5.25% unsecured Senior Notes due 2019
Subsequent Event [Line Items]
Debt instrument stated interest rate (percent)		5.75%								5.75%
Senior Notes \| 7 1/4% Senior Notes Maturing February 2023
Subsequent Event [Line Items]
Debt instrument stated interest rate (percent)		7.25%								7.25%
Senior Notes \| 7 1/4% Senior Notes Maturing February 2023 \| Prior to October 15, 2022
Subsequent Event [Line Items]
Debt Instrument, Redemption Price, Percentage										100.00%
Senior Notes \| 7 1/4% Senior Notes Maturing February 2023 \| On or prior to October 15, 2022
Subsequent Event [Line Items]
Debt Instrument, Redemption Price, Percentage										103.625%
Subsequent Event \| Secured Revolving Credit Facility
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 200,000,000
Subsequent Event \| Secured Revolving Credit Facility \| Minimum
Subsequent Event [Line Items]
Allowed increase in borrowing capacity	50,000,000
Subsequent Event \| Secured Revolving Credit Facility \| Maximum
Subsequent Event [Line Items]
Allowed increase in borrowing capacity	250,000,000
Subsequent Event \| Senior Notes
Subsequent Event [Line Items]
Redemption of senior notes	34,500,000
Loss on extinguishment of debt	25,900,000
Write off of deferred debt issuance cost	3,200,000
Subsequent Event \| Senior Notes \| 5.875% unsecured Senior Notes
Subsequent Event [Line Items]
Aggregate principal amount of debt	$ 400,000,000
Debt instrument stated interest rate (percent)	5.875%
Subsequent Event \| Senior Notes \| 5.875% unsecured Senior Notes \| Prior to October 15, 2022
Subsequent Event [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
Subsequent Event \| Senior Notes \| 5.875% unsecured Senior Notes \| On or prior to October 15, 2022
Subsequent Event [Line Items]
Debt Instrument, Redemption Price, Percentage	105.875%
Percentage of principal amount redeemed	35.00%
Percentage of principal amount outstanding after redemption	65.00%
Subsequent Event \| Senior Notes \| 5.25% unsecured Senior Notes due 2019
Subsequent Event [Line Items]
Debt instrument stated interest rate (percent)	5.75%
Extinguishment of debt, amount	$ 225,000,000
Subsequent Event \| Senior Notes \| 7 1/4% Senior Notes Maturing February 2023
Subsequent Event [Line Items]
Debt instrument stated interest rate (percent)	7.25%
Extinguishment of debt, amount	$ 175,000,000