Represents the carrying value of direct and indirect domestic subsidiaries of the company.

No definition available.

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Period Type:	instant

- Definition

Represents the consolidated fixed charge coverage ratio allowable under the financial covenant.

+ References

No definition available.

+ Details

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Namespace Prefix:	ccf_
Data Type:	xbrli:pureItemType
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- Definition

Represents the leverage ratio associated wit the New Credit Facility.

+ References

No definition available.

+ Details

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

- Definition

Amount of additional borrowing capacity under the credit facility per the agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	ccf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Potential term of a debt instrument.

+ References

No definition available.

+ Details

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- Definition

Represents the tern of interest payments due.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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.

+ Details

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Data Type:	num:percentItemType
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Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

- 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

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- 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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ccf_NewCreditAgreementMember
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- Details

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- Details

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Long-Term Debt (Details) $ in Thousands		1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
Long-Term Debt (Details) $ in Thousands	Dec. 15, 2016 USD ($)	Dec. 31, 2017 USD ($)	May 31, 2019 USD ($)	Feb. 28, 2019 USD ($)	Nov. 30, 2018 USD ($)	May 31, 2020 USD ($)	May 31, 2019 USD ($)	Aug. 31, 2018 USD ($)	Aug. 31, 2019 USD ($)
Long-term debt
Principal payment							$ 25,000
New Credit Agreement
Long-term debt
Maximum borrowing capacity	$ 150,000
Additional borrowing capacity	$ 50,000
Carrying value of direct and indirect domestic subsidiaries						$ 259,615
Applicable interest rate (as a percent)						0.00%
Term of debt						5 years
Amount drawn remained outstanding						$ 0			$ 0
Term of potential debt						7 years
Amount drew in relation to acquisition		$ 65,000
Principal payment			$ 6,000	$ 9,000	$ 10,000			$ 40,000
New Credit Agreement \| Minimum
Long-term debt
Consolidated fixed charge coverage ratio	1.25
New Credit Agreement \| Maximum
Long-term debt
Net leverage ratio	3.25
New Credit Agreement \| London Interbank Offered Rate (LIBOR)
Long-term debt
Interest payment due						3 months
New Credit Agreement \| London Interbank Offered Rate (LIBOR) \| Minimum
Long-term debt
Interest rate margin on variable rate basis (as a percent)						1.00%
New Credit Agreement \| London Interbank Offered Rate (LIBOR) \| Maximum
Long-term debt
Interest rate margin on variable rate basis (as a percent)						1.75%