XML 44 R31.htm IDEA: XBRL DOCUMENT
v3.22.1

Summary of Significant Accounting Policies (Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands | Jan. 29, 2022 | Jan. 30, 2021
--- | --- | ---
Municipal Bonds [Member] |  |
Significant Accounting Policies [Line Items] |  |
Debt Securities, Held-to-maturity, Amortized Cost, before Other-than-temporary Impairment | $ 277,141 | $ 140,928
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 330 | 60
Debt Securities, Held-to-maturity, Fair Value | 276,811 | 140,868
Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Significant Accounting Policies [Line Items] |  |
Debt Securities, Held-to-maturity, Amortized Cost, before Other-than-temporary Impairment | 41,072 | 45,398
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 44 | 7
Debt Securities, Held-to-maturity, Fair Value | 41,028 | 45,391
Corporate Bond Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Significant Accounting Policies [Line Items] |  |
Debt Securities, Held-to-maturity, Amortized Cost, before Other-than-temporary Impairment | 236,069 | 95,530
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 | 0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 286 | 53
Debt Securities, Held-to-maturity, Fair Value | 235,783 | $ 95,477
Other Long-term Investments |  |
Significant Accounting Policies [Line Items] |  |
Debt Securities, Held-to-maturity, Amortized Cost, before Other-than-temporary Impairment | 37,717 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 199 |
Debt Securities, Held-to-maturity, Fair Value | 37,518 |
Other Long-term Investments | Fair Value, Inputs, Level 2 [Member] |  |
Significant Accounting Policies [Line Items] |  |
Debt Securities, Held-to-maturity, Amortized Cost, before Other-than-temporary Impairment | 37,717 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 0 |
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 199 |
Debt Securities, Held-to-maturity, Fair Value | $ 37,518 |

X
- Definition Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | five_SignificantAccountingPoliciesLineItems
Namespace Prefix: | five_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123581744&loc=SL120269820-111563 + Details
Name: | us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123581744&loc=SL120269820-111563 + Details
Name: | us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before other-than-temporary impairment (OTTI) accretion, of investment in debt securities measured at amortized cost (held-to-maturity). + References No definition available. + Details
Name: | us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=SL120269820-111563 + Details
Name: | us-gaap_HeldToMaturitySecuritiesFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_OtherLongTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |