Amortized period of line of credit facility cost.

No definition available.

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- Definition

Debt instrument additional basis spread.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility loan cost.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility unamortized loan cost.

+ References

No definition available.

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Period Type:	instant

- Definition

Number of monthly installments.

+ References

No definition available.

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

Dividend or interest rate associated with the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction. Noncash are transactions that affect recognized assets or liabilities but that do not result in cash receipts or cash payments. Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments.

+ References

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Period Type:	duration

- Definition

The name of the original debt issue that has been converted in a noncash (or part noncash) transaction during the accounting period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

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

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of the required periodic payments applied to principal.

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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- Definition

Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Bank Loan - Additional Information (Detail)				12 Months Ended
Bank Loan - Additional Information (Detail)	Sep. 01, 2018	Jun. 30, 2018	Sep. 17, 2015 USD ($) shares	Sep. 30, 2018 USD ($) Installment	Sep. 30, 2017 USD ($)
US Bank National Association Loan [Member]
Debt Instrument [Line Items]
Common stock repurchase, share \| shares			1,500,000
Outstanding bank loan			$ 35,000,000
Number of monthly installments payable \| Installment				60
Required monthly loan principal repayment				$ 364,583
Final installment date				Sep. 17, 2020
Amortized loan costs				$ 410,000
Amortized cost on straight-line basis in months				60 months
Amortization expenses				$ 150,000	$ 150,000
Unamortized loan cost				$ 150,000
US Bank National Association Loan [Member] \| Promissory Note [Member]
Debt Instrument [Line Items]
Outstanding bank loan			20,000,000
California Bank and Trust Loan [Member] \| Promissory Note [Member]
Debt Instrument [Line Items]
Outstanding bank loan			$ 15,000,000
Prime Rate [Member] \| US Bank National Association Loan [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate				0.50%
One Month Libor [Member] \| US Bank National Association Loan [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate		2.75%		1.00%
Principal loan balance converted				$ 32,800,000
Debt instrument converted rate	2.104%
Effective interest rate on debt				4.854%
Debt conversion description				The Company intends to renew the one-monthLIBOR contract on a monthly basis as long as the LIBOR-based interest rate remains favorable compared to the prime rate-based interest rate.
Minimum [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| US Bank National Association Loan [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate				2.75%
Minimum [Member] \| One Month Libor [Member] \| US Bank National Association Loan [Member]
Debt Instrument [Line Items]
Debt instrument additional basis spread				0.25%
Maximum [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| US Bank National Association Loan [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate				3.25%
Maximum [Member] \| One Month Libor [Member] \| US Bank National Association Loan [Member]
Debt Instrument [Line Items]
Debt instrument additional basis spread				0.75%