XML 55 R45.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Cash, cash equivalents and short-term investments (Detail) (USD $) In Thousands, unless otherwise specified | Jan. 02, 2015 | Jan. 03, 2014
--- | --- | ---
Fair Value Measurements [Line Items] |  |
Amortized Cost | $ 154,380 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis | $ 156,103 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Unrealized Gains | 27 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments | 25 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments
Unrealized Losses | (4)expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments | (9)expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments
Estimated Fair Value | 154,403 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure | 156,119 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure
Total short-term investments |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 24,890 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis = us-gaap_ShortTermInvestmentsMember | 33,155 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis = us-gaap_ShortTermInvestmentsMember
Unrealized Gains | 27 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis = us-gaap_ShortTermInvestmentsMember | 25 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis = us-gaap_ShortTermInvestmentsMember
Unrealized Losses | (4)expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis = us-gaap_ShortTermInvestmentsMember | (9)expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis = us-gaap_ShortTermInvestmentsMember
Estimated Fair Value | 24,913 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis = us-gaap_ShortTermInvestmentsMember | 33,171 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis = us-gaap_ShortTermInvestmentsMember
Money market securities |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 45,478 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_MoneyMarketFundsMember | 37,099 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_MoneyMarketFundsMember
Unrealized Gains | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_MoneyMarketFundsMember | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_MoneyMarketFundsMember
Unrealized Losses | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_MoneyMarketFundsMember | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_MoneyMarketFundsMember
Estimated Fair Value | 45,478 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_MoneyMarketFundsMember | 37,099 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_MoneyMarketFundsMember
Total cash and cash equivalents |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 129,490 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember | 122,948 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember
Unrealized Gains | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember
Unrealized Losses | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember
Estimated Fair Value | 129,490 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember | 122,948 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_CashAndCashEquivalentsMember
Cash |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 84,012 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_InvestmentTypeAxis = us-gaap_CashMember | 85,849 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_InvestmentTypeAxis = us-gaap_CashMember
Unrealized Gains | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_CashMember | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_CashMember
Unrealized Losses | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_CashMember | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_CashMember
Estimated Fair Value | 84,012 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_InvestmentTypeAxis = us-gaap_CashMember | 85,849 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_InvestmentTypeAxis = us-gaap_CashMember
Total cash equivalents |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 45,478 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_InvestmentTypeAxis = us-gaap_CashEquivalentsMember | 37,099 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_InvestmentTypeAxis = us-gaap_CashEquivalentsMember
Unrealized Gains | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_CashEquivalentsMember | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_CashEquivalentsMember
Unrealized Losses | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_CashEquivalentsMember | 0 expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_CashEquivalentsMember
Estimated Fair Value | 45,478 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_InvestmentTypeAxis = us-gaap_CashEquivalentsMember | 37,099 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_InvestmentTypeAxis = us-gaap_CashEquivalentsMember
State and municipal bonds |  |
Fair Value Measurements [Line Items] |  |
Amortized Cost | 24,890 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember | 33,155 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember
Unrealized Gains | 27 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember | 25 expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember
Unrealized Losses | (4)expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember | (9)expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember
Estimated Fair Value | $ 24,913 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember | $ 33,171 expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember

X
- Definition Amount of accumulated gross unrealized gain on investments in available for sale securities. + References No definition available. + Details
Name: | expo_AvailableForSaleSecuritiesGrossUnrealizedGainAccumulatedInInvestments
Namespace Prefix: | expo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated gross unrealized loss on investments in available for sale securities. + References No definition available. + Details
Name: | expo_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments
Namespace Prefix: | expo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This item represents the fair value of cash, cash equivalents and short-term investments. + References No definition available. + Details
Name: | expo_CashCashEquivalentsAndShortTermInvestmentsFairValueDisclosure
Namespace Prefix: | expo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | expo_FairValueMeasurementsLineItems
Namespace Prefix: | expo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |