Name:	chs_DefinedContributionPlanEmployeeContributionPercent
Namespace Prefix:	chs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Defined Contribution Plan, Period Of Service Coverage Begins

No definition available.

Name:	chs_DefinedContributionPlanPeriodOfServiceCoverageBegins
Namespace Prefix:	chs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Defined Contribution Plan, Period Of Service For Full Vesting

No definition available.

Name:	chs_DefinedContributionPlanPeriodOfServiceForFullVesting
Namespace Prefix:	chs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Number of Working Hours Required to Qualify for Retirement Plan

No definition available.

Name:	chs_NumberofWorkingHoursRequiredtoQualifyforRetirementPlan
Namespace Prefix:	chs_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

No definition available.

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

Amount of cost for defined contribution plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Percentage employer matches of the employee's percentage contribution matched.

No definition available.