Line of Credit Facility, Borrowing Base

No definition available.

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- Definition

Line of Credit Facility, Maximum Borrowing Capacity, Increase

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: 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=26872669&loc=d3e20235-122688

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 8
-Article 9

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- 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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Balance Type:	na
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- 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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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Debt (Narrative) (Details) - USD ($)						9 Months Ended
Debt (Narrative) (Details) - USD ($)	Aug. 19, 2016	Jun. 17, 2016	May 17, 2016	Apr. 28, 2016	Apr. 27, 2016	Sep. 30, 2016	Sep. 30, 2015	Jun. 16, 2016
Debt Instrument [Line Items]
Amortization of debt issuance costs						$ 3,733,000	$ 2,130,000
Revolving Credit Facility \| ODAC Agreement Due May 2017
Debt Instrument [Line Items]
Borrowing base, percent				75.00%	70.00%
Revolving Credit Facility \| ODART Agreement Due September 2017
Debt Instrument [Line Items]
Line of credit		$ 162,400,000.0						$ 150,000,000
Borrowing base, percent		92.00%
Line of credit facility, increase (decrease), net		$ 12,400,000
Revolving Credit Facility \| ODART Agreement Due September 2017 \| LIBOR
Debt Instrument [Line Items]
Variable interest spread		8.00%
Revolving Credit Facility \| ODAF I Agreement Due August 2018
Debt Instrument [Line Items]
Line of credit	$ 100,000,000
Borrowing base, percent	80.00%
Revolving Credit Facility \| ODAF I Agreement Due August 2018 \| LIBOR
Debt Instrument [Line Items]
Variable interest spread	7.25%
Secured Debt \| ODAST II Agreement Due May 2020
Debt Instrument [Line Items]
Repayment of debt			$ 250,000,000
Secured Debt \| ODAST II Agreement Due May 2020 - Class A
Debt Instrument [Line Items]
Repayment of debt			$ 211,500,000
Stated interest rate			4.21%
Secured Debt \| ODAST II Agreement Due May 2020 - Class B
Debt Instrument [Line Items]
Repayment of debt			$ 38,500,000
Stated interest rate			7.63%
Secured Debt \| ODAST Agreement Due May 2018
Debt Instrument [Line Items]
Repayment of debt			$ 175,000,000
ODAC \| Revolving Credit Facility \| ODAC Agreement Due May 2017
Debt Instrument [Line Items]
Line of credit				$ 75,000,000	$ 50,000,000
ODAC \| Revolving Credit Facility \| ODAC Agreement Due May 2017 \| LIBOR
Debt Instrument [Line Items]
Variable interest spread				9.25%	8.25%
Interest Expense \| Secured Debt \| ODAST Agreement Due May 2018
Debt Instrument [Line Items]
Amortization of debt issuance costs						$ 1,600,000