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

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- Definition

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

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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.

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No definition available.

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- Definition

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

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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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.

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- Definition

Amount of asset related to consideration paid in advance for interest that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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LONG-TERM DEBT - Senior Unsecured Notes (Details) - USD ($)	1 Months Ended
	Oct. 31, 2016	Aug. 31, 2015	Jun. 30, 2017	Sep. 30, 2016	Nov. 30, 2015	Aug. 31, 2013
Debt Instrument [Line Items]
Accrued interest payable			$ 8,703,000	$ 5,512,000
Senior Unsecured Notes \| 2013 9 3/4% Senior Unsecured Notes
Debt Instrument [Line Items]
Loan face amount						$ 500,000,000
Note stated interest rate				9.75%		9.75%
Proceeds from private placement		$ 85,000,000
Accrued interest payable				$ 4,800,000
Senior Unsecured Notes \| 2016 7 7/8% Senior Unsecured Notes
Debt Instrument [Line Items]
Loan face amount	$ 500,000,000
Note stated interest rate	7.875%		7.875%
Accrued interest payable			$ 8,300,000
Senior Unsecured Notes \| 2016 7 7/8% Senior Unsecured Notes \| Redeemable rate prior to October 15, 2019
Debt Instrument [Line Items]
Redemption price as a percentage of principal	100.00%
Senior Unsecured Notes \| 2016 7 7/8% Senior Unsecured Notes \| Redeemable rate upon change of control
Debt Instrument [Line Items]
Redemption price as a percentage of principal	101.00%
Senior Unsecured Notes \| 2016 7 7/8% Senior Unsecured Notes \| Redeemable rate upon certain asset sales
Debt Instrument [Line Items]
Redemption price as a percentage of principal	100.00%
Senior Unsecured Notes \| 2016 7 7/8% Senior Unsecured Notes \| Redeemable rate upon unsuitability
Debt Instrument [Line Items]
Redemption price as a percentage of principal	100.00%
Senior Unsecured Notes \| 2015 Senior Unsecured Notes
Debt Instrument [Line Items]
Loan face amount					$ 100,000,000
Prepaid interest				$ 1,100,000
Credit Facility \| Facility Agreement
Debt Instrument [Line Items]
Borrowing capacity					$ 100,000,000