Derivative interest rate cap, net payment received or accrued from counter parties.

No definition available.

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Derivative interest rate cap payment offset due to counter parties.

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No definition available.

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Derivative interest rate cap payment received or accrued from counter parties.

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No definition available.

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Line of credit facility expiration year and month.

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Line of credit increase in borrowing capacity.

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Margin on base rate.

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No definition available.

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Mortgage debt.

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Number of extension options.

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Premiums paid for derivatives.

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The amount of a specific compensating balance arrangement that is maintained under an agreement for a bank loan or future credit availability.

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

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No definition available.

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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.

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No definition available.

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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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.

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No definition available.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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No definition available.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fixed interest rate related to the interest rate derivative.

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No definition available.

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Date the derivative contract matures, in CCYY-MM-DD format.

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No definition available.

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Nominal or face amount used to calculate payment on derivative.

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The number of derivative instruments of a particular group held by the entity.

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

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No definition available.

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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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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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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.

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

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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No definition available.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Debt and Financial Instruments - Additional Information (Detail)		1 Months Ended		3 Months Ended					6 Months Ended	9 Months Ended		12 Months Ended	33 Months Ended	36 Months Ended
	Mar. 27, 2018 USD ($) Option	Mar. 31, 2020 USD ($) Derivative	Jan. 31, 2020 USD ($) Derivative	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($) Derivative	Mar. 31, 2019 USD ($)	Sep. 30, 2016 USD ($) Derivative	Jun. 30, 2016 USD ($) Derivative	Jun. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($) Derivative	Dec. 31, 2018 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Proceeds from lines of credit										$ 14,150,000	$ 9,250,000
Outstanding borrowings under revolving credit agreement				$ 227,100,000						227,100,000					$ 212,950,000
Letters of credit outstanding				5,600						5,600
Available borrowing capacity				117,300,000						117,300,000					87,000,000.0
Compensating balance				0						0
Interest Rate Swap \| Cash Flow Hedge
Debt Instrument [Line Items]
Number of interest rate cap agreements \| Derivative		1	1		1						1
Derivative instruments, fixed rate		0.565%	1.4975%		1.144%						1.144%
Notional amount		$ 55,000,000	$ 35,000,000		$ 50,000,000						$ 50,000,000
Expiration date of interest rate		Mar. 25, 2027	Sep. 16, 2024		Sep. 16, 2024
Interest Rate Cap
Debt Instrument [Line Items]
Number of interest rate cap agreements \| Derivative							1	1
Notional amount							$ 30,000,000	$ 30,000,000
Expiration date of interest rate							Mar. 31, 2019	Mar. 31, 2019
Derivative interest rate cap, payment received or accrued from counterparties						$ 61,000						$ 144,000	$ 205,000	$ 205,000
Premium paid							$ 55,000	$ 115,000
Level 2
Debt Instrument [Line Items]
Mortgage loan fair value				63,100,000						63,100,000					63,100,000
Mortgage debt															$ 61,100,000
Derivative interest rate cap, net payment received or accrued from counterparties										322,000
Derivative interest rate cap, payment received or accrued from counterparties										199,000
Derivative interest rate cap, offset due to counterparties										521,000
Level 2 \| Interest Rate Swap
Debt Instrument [Line Items]
Liability derivatives, fair value				4,700,000						4,700,000
Derivative interest rate cap, net payment received or accrued from counterparties				299,000						430,000
Derivative interest rate cap, payment received or accrued from counterparties										521,000
Derivative interest rate cap, offset due to counterparties										91,000
LIBOR \| Interest Rate Cap
Debt Instrument [Line Items]
Derivative instruments, LIBOR rate							1.50%	1.50%
Credit Agreement
Debt Instrument [Line Items]
Outstanding borrowing				$ 350,000,000						$ 350,000,000
Credit Agreement
Debt Instrument [Line Items]
Outstanding borrowing	$ 350,000,000
Unsecured revolving amended credit agreement terminated date	2022-03
Number of additional six month extension options \| Option	2
Credit Agreement \| Swingline/Short-Term Loans
Debt Instrument [Line Items]
Outstanding borrowing	$ 30,000,000
Credit Agreement \| Letters of Credit
Debt Instrument [Line Items]
Outstanding borrowing	$ 40,000,000
Revolving B Facility
Debt Instrument [Line Items]
Outstanding borrowing									$ 300,000,000
Proceeds from lines of credit									50,000,000
Increase in borrowing capacity									$ 350,000,000
Credit facility, Interest Rate Terms										one, two, three, or six months LIBOR plus an applicable margin ranging from 1.85% to 2.10% or at the Base Rate plus an applicable margin ranging from 0.85% to 1.10%.
Base rate description										the greatest of (a) the Administrative Agent’s prime rate, (b) the federal funds effective rate plus 1/2 of 1% and (c) one month LIBOR plus 1%.
Facility fee payable on commitment										0.20%
Revolving B Facility \| LIBOR
Debt Instrument [Line Items]
Margin points added to the reference rate	1.95%									1.95%
Revolving B Facility \| Base Rate
Debt Instrument [Line Items]
Margin points added to the reference rate	0.95%									0.95%
Revolving B Facility \| Minimum
Debt Instrument [Line Items]
Facility fee payable on commitment	0.15%
Revolving B Facility \| Minimum \| LIBOR
Debt Instrument [Line Items]
Margin points added to the reference rate	1.85%
Margin points added to the base rate	1.00%
Revolving B Facility \| Minimum \| Base Rate
Debt Instrument [Line Items]
Margin points added to the reference rate	0.85%
Revolving B Facility \| Minimum \| Federal Funds Effective Rate
Debt Instrument [Line Items]
Margin points added to the base rate	0.50%
Revolving B Facility \| Maximum
Debt Instrument [Line Items]
Facility fee payable on commitment	0.35%
Revolving B Facility \| Maximum \| LIBOR
Debt Instrument [Line Items]
Margin points added to the reference rate	2.10%
Revolving B Facility \| Maximum \| Base Rate
Debt Instrument [Line Items]
Margin points added to the reference rate	1.10%
Revolving A Facility
Debt Instrument [Line Items]
Credit facility, Interest Rate Terms										one, two, three, or six-month LIBOR plus an applicable margin ranging from 1.10% to 1.35% or at the Base Rate plus an applicable margin ranging from 0.10% to 0.35%.
Base rate description										the greater of: (a) the administrative agent’s prime rate; (b) the federal funds effective rate plus 1/2 of 1%, and; (c) one month LIBOR plus 1%.
Facility fee payable on commitment										0.20%
Revolving A Facility \| LIBOR
Debt Instrument [Line Items]
Margin points added to the reference rate										1.20%
Revolving A Facility \| Base Rate
Debt Instrument [Line Items]
Margin points added to the reference rate										0.20%
Revolving A Facility \| Minimum
Debt Instrument [Line Items]
Facility fee payable on commitment	0.15%
Revolving A Facility \| Minimum \| LIBOR
Debt Instrument [Line Items]
Margin points added to the reference rate	1.10%
Margin points added to the base rate	1.00%
Revolving A Facility \| Minimum \| Base Rate
Debt Instrument [Line Items]
Margin points added to the reference rate	0.10%
Revolving A Facility \| Minimum \| Federal Funds Effective Rate
Debt Instrument [Line Items]
Margin points added to the base rate	0.50%
Revolving A Facility \| Maximum
Debt Instrument [Line Items]
Facility fee payable on commitment	0.35%
Revolving A Facility \| Maximum \| LIBOR
Debt Instrument [Line Items]
Margin points added to the reference rate	1.35%
Revolving A Facility \| Maximum \| Base Rate
Debt Instrument [Line Items]
Margin points added to the reference rate	0.35%