Debt Covenant, Mandatory Cash Payment In Excess Of Amount Minimum

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Debt covenant reinvested term, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

The amortization period of debt issuance costs.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of foreign currency borrowing capacity.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the annual fee percentage on letter of credit.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represent the letter of credit annual fee percentage reimbursement.

+ References

No definition available.

+ Details

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- Definition

Repayment period for letter of credit, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Percentage of letter of credit disbursements.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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Period Type:	instant

- 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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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

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Balance Type:	debit
Period Type:	instant

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Floor rate on an interest rate derivative such as an interest rate floor or collar. If market rates falls below the floor rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Fixed interest rate that will be received or paid upon exercise of the interest rate swaption contract.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) of the credit facility.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Date the credit facility first became available, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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.

+ Details

Name:	us-gaap_LineOfCreditFacilityLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Balance Type:	credit
Period Type:	instant

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- Details

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Period Type:

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Period Type:

- Details

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Debt (Additional Information) (Detail) - USD ($)			3 Months Ended
Debt (Additional Information) (Detail) - USD ($)	Mar. 24, 2020	Apr. 13, 2018	Sep. 30, 2020	Dec. 31, 2016	Jun. 30, 2020	Sep. 30, 2019
Line of Credit Facility [Line Items]
Letters of credit outstanding			$ 68,400,000	$ 68,400,000	$ 68,400,000	$ 68,400,000
Letter Of Credit Title Iv Disbursement Percentage				10.00%
Letter of credit, repayment period				5 years
Commitment fee percentage			0.40%
Credit annual fee percentage reimbursement			2.00%
Annual fee percentage			2.25%
Line of Credit facility, initiation date		Apr. 13, 2018
Outstanding letters of credit			$ 231,600,000
Long-term debt			288,621,000		289,115,000	330,600,000
Increase in line of credit facility		$ 250,000,000
Debt issuance costs, gross		$ 9,900,000
Long-term debt, gross			$ 293,250,000		$ 294,000,000	$ 336,250,000
Term Loan [Member]
Line of Credit Facility [Line Items]
Interest rate for borrowings under the Term B Loan facility			3.15%		3.18%	5.04%
Debt instrument, maturity date		Apr. 13, 2025
Debt instrument, face amount		$ 300,000,000
Principal payment		750,000
Debt issuance costs, gross		$ 7,100,000
Amortization period		7 years
Debt covenant reinvested term			1 year
Eurocurrency Rate [Member] \| Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, description of variable rate basis			LIBOR-equivalent rate plus 3%
Basic spread rate	3.00%		3.00%
Base Rate [Member] \| Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, description of variable rate basis			base rate plus 2%
Basic spread rate			2.00%
Revolver [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 300,000,000
Line of credit facility, expiration date		Apr. 13, 2023
Foreign currency borrowing capacity		$ 200,000,000
Long-term Line of Credit			$ 0			$ 40,000,000
Debt issuance costs, gross		$ 2,700,000
Amortization period		5 years
Revolver [Member] \| Minimum
Line of Credit Facility [Line Items]
Application rate, percentage			1.75%
Revolver [Member] \| Maximum
Line of Credit Facility [Line Items]
Application rate, percentage			2.75%
Revolver [Member] \| Weighted Average
Line of Credit Facility [Line Items]
Application rate, percentage						4.20%
Revolver [Member] \| Prime Rate [Member] \| Minimum
Line of Credit Facility [Line Items]
Application rate, percentage			0.75%
Revolver [Member] \| Prime Rate [Member] \| Maximum
Line of Credit Facility [Line Items]
Application rate, percentage			1.75%
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 100,000,000
Term B Loan [Member]
Line of Credit Facility [Line Items]
Debt Covenant, Mandatory Cash Payment In Excess Of Amount Minimum			$ 50,000,000
Interest Rate Swap \| Term Loan [Member]
Line of Credit Facility [Line Items]
Derivative, Fixed Interest Rate	0.946%
Derivative, Swaption Interest Rate			3.946%
Interest Rate Swap \| LIBOR \| Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, description of variable rate basis	one-month LIBOR
Interest Rate Swap \| LIBOR \| Minimum \| Term Loan [Member]
Line of Credit Facility [Line Items]
Derivative, Floor Interest Rate	0.00%