XML 89 R74.htm IDEA: XBRL DOCUMENT
v3.10.0.1

POST EMPLOYMENT PLANS (Schedule of Assumptions Used) (Details) - Post-Employment Benefit Plans [Member] | Aug. 31, 2018 | Aug. 31, 2017
--- | --- | ---
Minimum [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Discount rate | 3.50% | 3.50%
Future salary escalation | 3.00% | 3.00%
Percentage of employees assumed to withdraw from Company without a benefit (“turnover”) | 9.60% | 3.90%
Percentage of employees assumed to withdraw from Company with a benefit (“disability”) | 0.50% | 0.50%
Maximum [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Discount rate | 10.80% | 10.50%
Future salary escalation | 5.00% | 5.00%
Percentage of employees assumed to withdraw from Company without a benefit (“turnover”) | 19.50% | 19.50%
Percentage of employees assumed to withdraw from Company with a benefit (“disability”) | 4.50% | 6.00%

X
- Definition Percentage of employees assumed to withdraw from Company with a benefit (“disability”) + References No definition available. + Details
Name: | psmt_PercentageOfEmployeesAssumedToWithdrawFromCompanyWithBenefitDisability
Namespace Prefix: | psmt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of employees assumed to withdraw from Company without a benefit (“turnover”) + References No definition available. + Details
Name: | psmt_PercentageOfEmployeesAssumedToWithdrawFromCompanyWithoutBenefitTurnover
Namespace Prefix: | psmt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=psmt_PostretirementBenefitPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |