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Standby Letters of Credit

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

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

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Amount of the required periodic payments applied to principal.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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No definition available.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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Debt - Narrative (Details)		1 Months Ended	3 Months Ended	10 Months Ended	22 Months Ended
Debt - Narrative (Details)	Dec. 16, 2020 USD ($)	Aug. 31, 2021 USD ($)	Aug. 31, 2021 USD ($)	Jul. 31, 2021	Jul. 31, 2021	May 31, 2021 USD ($)	Aug. 31, 2020 USD ($)	Jan. 24, 2020 GBP (£)	Sep. 23, 2019 GBP (£)	Jan. 05, 2017 USD ($)
Debt (Details) [Line Items]
Debt		$ 89,500,000	$ 89,500,000			$ 190,200,000	$ 219,900,000
Standby letters of credit		4,300,000	4,300,000
Revolving Credit Facility
Debt (Details) [Line Items]
Debt		75,000,000.0	75,000,000.0			175,000,000.0	200,000,000.0
Payment on long term debt			100,000,000.0
Loan Agreement
Debt (Details) [Line Items]
Maximum borrowing capacity	$ 250,000,000.0
Borrowing capacity										$ 375,000,000.0
Liquidity amount	$ 200,000,000.0
Percentage of consolidated assets	10.00%
Facility fee rate	0.40%
Acquisition limitation amount	$ 25,000,000.0
Minimum liquidity	300,000,000.0
Standby letters of credit		$ 400,000	$ 400,000
Loan Agreement \| Swingline Facility
Debt (Details) [Line Items]
Maximum borrowing capacity	15,000,000.0
Loan Agreement \| Revolving Credit Facility
Debt (Details) [Line Items]
Maximum borrowing capacity	$ 50,000,000.0
Loan Agreement \| Eurodollar
Debt (Details) [Line Items]
Variable rate (percentage)	1.00%
Drawn after delivery	1.60%
Loan Agreement \| Base Rate
Debt (Details) [Line Items]
Drawn after delivery	0.60%
Loan Agreement \| London Interbank Offered Rate (LIBOR)
Debt (Details) [Line Items]
Variable rate (percentage)	0.25%
All-in borrowing rate		1.85%	1.85%
Loan Agreement \| Federal Funds Rate
Debt (Details) [Line Items]
Variable rate (percentage)	0.50%
UK Loan
Debt (Details) [Line Items]
Debt		$ 7,100,000	$ 7,100,000			7,300,000	11,400,000
Short-term debt		2,800,000	2,800,000
Face amount of debt \| £									£ 2,000,000.0
UK Loan \| Line of Credit
Debt (Details) [Line Items]
Maximum borrowing capacity \| £								£ 6,600,000
Short-term debt		4,300,000	4,300,000
Remaining borrowing capacity		$ 4.7	$ 4.7
UK Loan \| Base Rate
Debt (Details) [Line Items]
Variable rate (percentage)		2.25%	0.10%
UK Loan \| Base Rate \| Line of Credit
Debt (Details) [Line Items]
Variable rate (percentage)		2.25%	0.10%	1.77%	1.77%
Unsecured Debt \| Domestic Line of Credit
Debt (Details) [Line Items]
Borrowing capacity		$ 10,000,000.0	$ 10,000,000.0
Standby letters of credit		3,900,000	3,900,000
Short-term debt		0	0			0	0
Available credit		6,100,000	$ 6,100,000
Expiration period (in days)			365 days
Secured Debt \| Line of Credit
Debt (Details) [Line Items]
Borrowing capacity		27,900,000	$ 27,900,000
Debt		7,400,000	7,400,000			$ 7,900,000	$ 8,500,000
Available credit		$ 20,500,000	$ 20,500,000
Expiration period (in days)			364 days
Weighted average interest rate (percentage)		4.80%	4.80%			4.70%	4.20%