XML 74 R37.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Organization and Summary of Significant Accounting Policies (Narrative) (Details) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2015 | Oct. 31, 2008 | Dec. 29, 2017 USD ($) segment product | Dec. 30, 2016 USD ($) | Jan. 01, 2016 USD ($)
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Number of products that entered in the commercial marketplace | product |  |  | 3 |  |
Number of reportable segments | segment |  |  | 1 |  |
Impairment charge on goodwill |  |  | $ 0 | $ 0 | $ 0
Percent discount for prompt payment |  |  | 2.00% |  |
Discount expected to be earned |  |  | 100.00% |  |
Adoption of Accounting Standards Update No. 2016-09 |  |  |  | 0 |
Net cash provided by operating activities |  |  | $ 165,611,000 | 210,404,000 | (141,051,000)
Net cash used in financing activities |  |  | 169,928,000 | (15,696,000) | (152,213,000)
Accumulated deficit |  |  | $ 1,829,172,000 | 1,983,147,000 |
GlaxoSmithKline [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Percent of royalty on net sale |  | 3.00% |  |  |
Collaborative Arrangement with Genentech [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Percentage of share of the Company in promotions | 25.00% |  |  |  |
Collaborative Arrangement with Genentech [Member] | Maximum [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Percentage of share of the Company in promotions |  |  | 25.00% |  |
Products Derived from Cabozantinib [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Number of products that entered in the commercial marketplace | product |  |  | 2 |  |
Accounting Standards Update 2016-09 [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Net cash provided by operating activities |  |  |  | 4,100,000 | 500,000
Net cash used in financing activities |  |  |  | 4,100,000 | $ 500,000
Accumulated Deficit [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Adoption of Accounting Standards Update No. 2016-09 |  |  |  | 252,000 |
Accumulated Deficit [Member] | Accounting Standards Update 2016-09 [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Adoption of Accounting Standards Update No. 2016-09 |  |  |  | 300,000 |
Additional Paid-In Capital [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Adoption of Accounting Standards Update No. 2016-09 |  |  |  | $ (252,000) |
Additional Paid-In Capital [Member] | Accounting Standards Update 2016-09 [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Adoption of Accounting Standards Update No. 2016-09 |  |  | $ (300,000) |  |
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member] | Pro Forma [Member] |  |  |  |  |
Organization And Summary Of Significant Policies [Line Items] |  |  |  |  |
Accumulated deficit |  |  | $ 260,000,000 |  |

X
- Definition Number of Products in Commercial Market + References No definition available. + Details
Name: | exel_NumberofProductsinCommercialMarket
Namespace Prefix: | exel_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Organization And Summary Of Significant Policies [Line Items] + References No definition available. + Details
Name: | exel_OrganizationAndSummaryOfSignificantPoliciesLineItems
Namespace Prefix: | exel_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percent of royalty on net sale. + References No definition available. + Details
Name: | exel_PercentOfRoyaltyOnNetSale
Namespace Prefix: | exel_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Profit Sharing Agreement, Optional Percent of Total Sales Force + References No definition available. + Details
Name: | exel_ProfitSharingAgreementOptionalPercentOfTotalSalesForce
Namespace Prefix: | exel_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sales Revenue, Discount Expected to be Earned, Percent + References No definition available. + Details
Name: | exel_SalesRevenueDiscountExpectedtobeEarnedPercent
Namespace Prefix: | exel_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sales Revenue, Percent Discount for Prompt Payment + References No definition available. + Details
Name: | exel_SalesRevenuePercentDiscountForPromptPayment
Namespace Prefix: | exel_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. + References No definition available. + Details
Name: | us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInOperatingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(a)(4)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: 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(30)(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_RetainedEarningsAccumulatedDeficit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_MajorCustomersAxis=exel_GlaxoSmithKlineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=exel_CollaborativeArrangementwithGenentechMember
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: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=exel_ProductsDerivedfromCabozantinibMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201609Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_RetainedEarningsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AdditionalPaidInCapitalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis=us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201409Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ProFormaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |