Supporting Financial Information - Debt Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Less current portion of bank debt obligations	$ (787)	$ 0
Long term portion of bank debt obligation	62,844	6,958
Debt obligations
Debt Instrument [Line Items]
Bank term loan	66,063	7,708
Less unamortized deferred financing cost	(1,906)	(750)
Net bank debt obligation	64,157	6,958
Less current portion of bank debt obligations	(1,313)	0
Long term portion of bank debt obligation	$ 62,844	$ 6,958

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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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-Paragraph 4
-Subparagraph (b)(3)
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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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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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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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