Long Term and Other Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Capital leases and hire purchase contract	$ 275
Total long-term debt outstanding	140,275
Less: current portion of long-term debt	(274)	$ (474)
Long-term debt, excluding current portion	140,001	140,069
Unamortized deferred financing charge	(8,096)	(8,775)
Unamortized deferred financing charge, Less: current portion of long-term debt	(8,096)	(8,775)
Unamortized deferred financing charge, Long-term debt, excluding current portion	(8,096)	(8,775)
Book value, Total long-term debt outstanding	132,179	131,768
Long-term debt, excluding current portion	131,905	131,294
Senior Bank Debt [Member]
Debt Instrument [Line Items]
Senior bank debt	140,000
Book value	$ 131,904	$ 131,225

Sum of the carrying values as of the balance sheet date of all long-term debt, and capital lease obligations.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount of short-term and long-term debt and lease obligation.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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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Amount, after accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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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 and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, including portion classified as current.

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

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