Base Interest Rate Spread- The percentage points added to the appropriate index in determining the base interest rate.

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- Definition

Future Liquidity- Warrant Exercise Proceeds- the proceeds received by the Company if and when warrants are exercised in the future.

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- Definition

Interest Rate Margin- The percentage points added to the Base Interest Rate to arrive at the stated rate of interest in the debt agreement.

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Liquidity- Amount of cash availble for immediate use of the company including: cash and cash equivalents, current borrowing capacity under a revolver, etc.

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- Definition

Warrant liability fair value

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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Number of warrants or rights outstanding.

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- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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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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Percentage of principal amount of debt redeemed.

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No definition available.

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Debt Schedule of Long-Term Debt Instruments (Details) - USD ($)	6 Months Ended
	Mar. 31, 2019	Sep. 30, 2018	Mar. 31, 2014	Mar. 30, 2014
Debt Instrument [Line Items]
Class of Warrant or Right, Outstanding	6,000,000
Unamortized Debt Issuance Expense	$ (15,529,000)
Amortization of Debt Issuance Costs	1,525,000
Warrant liability fair value	$ 4,479,000	$ 1,726,000		$ 16,930,000
Debt, Weighted Average Interest Rate	10.00%
Debt, Long-term and Short-term, Combined Amount	$ 476,455,000	484,859,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	385,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	84,137,000
Current maturities of long-term debt	7,318,000	7,027,000
Long-term Debt	453,608,000	460,777,000
Liquidity	38,100,000
Future Liquidity- Warrant Exercise Proceeds	25,140,000
Revolving Line Of Credit [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 0	0
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Line of Credit Facility, Remaining Borrowing Capacity	$ 21,435,000
Line of Credit [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	27,000,000		$ 40,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 400,000,000
Debt Instrument, Interest Rate at Period End	9.50%
Debt, Long-term and Short-term, Combined Amount	$ 385,000,000	385,000,000
Debt Instrument, Interest Rate, Stated Percentage	10.00%
New 1st Lien Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 250,000,000
Debt, Long-term and Short-term, Combined Amount	$ 0	6,303,000
Debt Instrument, Interest Rate, Stated Percentage	9.00%
New Second Lien Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 150,000,000
Debt Instrument, Interest Rate at Period End	12.00%
Debt, Long-term and Short-term, Combined Amount	$ 91,455,000	$ 93,556,000
Debt Instrument, Interest Rate, Stated Percentage	12.00%
Federal Funds Rate [Member] \| Revolving Line Of Credit [Member]
Debt Instrument [Line Items]
Interest Rate Margin	4.50%
30 Day LIBOR [Member] \| Revolving Line Of Credit [Member]
Debt Instrument [Line Items]
Interest Rate Margin	5.50%
30 Day LIBOR [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Base Interest Rate	0.50%
March 15, 2019 through March 14, 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	102.40%
After March 31, 2019 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	100.00%