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

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

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Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

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Fair value portion of notes payable.

+ 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 210.5-02.19,20,22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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ORGANIZATION AND BASIS OF PRESENTATION - Fair Value Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Sep. 30, 2017
Senior Secured Credit Facility - Revolving \| Credit Facility \| Carrying Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Credit facility value	$ 84,000
Senior Secured Credit Facility - Revolving \| Credit Facility \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Credit facility value	80,016
Senior Secured Credit Facility - Term Loan A \| Credit Facility \| Carrying Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Credit facility value	327,480
Senior Secured Credit Facility - Term Loan A \| Credit Facility \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Credit facility value	323,431
Senior Secured Credit Facility - Term Loan B \| Credit Facility \| Carrying Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Credit facility value	811,711
Senior Secured Credit Facility - Term Loan B \| Credit Facility \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Credit facility value	$ 784,431
2016 7 7/8% Senior Unsecured Notes \| Senior Unsecured Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Note stated interest rate	7.875%	7.875%
2016 7 7/8% Senior Unsecured Notes \| Senior Unsecured Notes \| Carrying Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Note value	$ 488,639
2016 7 7/8% Senior Unsecured Notes \| Senior Unsecured Notes \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Note value	$ 472,500