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Company's Debt (Detail) - USD ($) $ in Thousands | Sep. 30, 2018 | Sep. 30, 2017
--- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Long-term debt, carrying Amount |  | $ 100,780 |  | $ 75,717
Current maturities of long-term debt, carrying Amount |  | 9,000 |  | 10,000
Long-term debt |  | 91,780 |  | 65,717
Long-term debt, fair value |  | 101,500 | [1] | 76,300
Current maturities of long-term debt, fair value |  | 9,000 | [1] | 10,000
Long-term portion of debt, fair value |  | 92,500 | [1] | 66,300
Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility borrowings, carrying Amount |  | 1,500 |  |
Credit facility borrowings, fair value | [1] | 1,500 |  |
Term Loan |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt, carrying Amount | [2] | 99,280 |  | 75,717
Long-term debt, fair value | [2] | $ 100,000 | [1] | $ 76,300
[1] | The face amount of the Company’s variable rate long-term debt approximates fair value.
[2] | Carrying amounts are net of unamortized debt issuance costs of $0.7 million as of September 30, 2018 and $0.6 million as of September 30, 2017.

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