XML 55 R44.htm IDEA: XBRL DOCUMENT
v3.20.2

Leases - Additional Information (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 03, 2020 USD ($) a State Option | Jun. 28, 2019 USD ($) | Jul. 03, 2020 USD ($) a State Option | Jun. 28, 2019 USD ($)
Other Income [Member] |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Rental Income | $ | $ 869,000 | $ 741,000 | $ 1,861,000 | $ 1,482,000
Office, Laboratory, and Storage Space [Member] |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Number of States in which Entity Has Lease Arrangements | State | 13 |  | 13 |
Office, Laboratory, and Storage Space [Member] | Minimum |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Lessee, Operating Lease, Term of Contract | 1 year |  | 1 year |
Office, Laboratory, and Storage Space [Member] | Maximum |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Lessee, Operating Lease, Term of Contract | 10 years |  | 10 years |
Phoenix Arizona |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |
Lessee, Operating Lease, Term of Contract | 30 years |  | 30 years |
Area of Land | a | 147 |  | 147 |
Number of Options to Renew Lease | Option | 2 |  | 2 |
Lessee, Operating Lease, Renewal Term | 15 years |  | 15 years |

X
- Definition Number of options to renew lease. + References No definition available. + Details
Name: | expo_NumberOfOptionsToRenewLease
Namespace Prefix: | expo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of states in which entity has lease arrangements. + References No definition available. + Details
Name: | expo_NumberOfStatesInWhichEntityHasLeaseArrangements
Namespace Prefix: | expo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Area of land held. + References No definition available. + Details
Name: | us-gaap_AreaOfLand
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
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_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
Name: | us-gaap_RentalIncomeNonoperating
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OtherIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LeaseContractualTermAxis=expo_OfficeLaboratoryAndStorageSpaceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
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: | us-gaap_LeaseContractualTermAxis=expo_PhoenixArizonaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |