XML 94 R72.htm IDEA: XBRL DOCUMENT
v3.19.3

POST EMPLOYMENT PLANS (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2017
Defined Benefit Plan Disclosure [Line Items] |  |  |
Maximum contribution rate of annual eligible earnings to be matched under 401(k) plans | 4.00% |  |
U.S. Federal [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Cost Recognized | $ 2.1 | $ 2.0 | $ 1.8
Foreign Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Cost Recognized | $ 3.0 | $ 2.9 | $ 3.1
Maximum [Member] | Non-Officer [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Employee contribution rate | 2.00% |  |

X
- Definition Defined Contribution Plan, Employee's Percent Of Salary Contribution + References No definition available. + Details
Name: | psmt_DefinedContributionPlanEmployeeSPercentOfSalaryContribution
Namespace Prefix: | psmt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=psmt_NonOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |