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Long-Term Debt and Lines of Credit - Schedule of Long-term Debt, Net of Current Portion (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Sep. 30, 2018
--- | --- | ---
Debt Instrument [Line Items] |  |
Total future maturities | $ 171,642 | $ 174,349
Deferred Financing Costs, Net | 1,514 | 1,563
Less current portion | 5,300 | 5,275
Long-term debt | 166,342 | 169,074
Met Fixed-Rate Term Loans |  |
Debt Instrument [Line Items] |  |
Total future maturities | 94,375 | 95,938
Deferred Financing Costs, Net | 808 | 836
Met Variable-Rate Term Loans |  |
Debt Instrument [Line Items] |  |
Total future maturities | 46,000 | 46,719
Deferred Financing Costs, Net | 372 | 385
Met Citree Term Loan |  |
Debt Instrument [Line Items] |  |
Total future maturities | 4,900 | 4,925
Deferred Financing Costs, Net | 43 | 44
Pru Loans A & B |  |
Debt Instrument [Line Items] |  |
Total future maturities | 17,127 | 17,417
Deferred Financing Costs, Net | 237 | 241
Pru Loan E |  |
Debt Instrument [Line Items] |  |
Total future maturities | 4,620 | 4,675
Deferred Financing Costs, Net | 15 | 17
Pru Loan F |  |
Debt Instrument [Line Items] |  |
Total future maturities | 4,620 | 4,675
Deferred Financing Costs, Net | $ 39 | $ 40

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- Definition 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 -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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