Capital Leases, Contractual Term

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- Definition

Number of Asserted Patents

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Number of Parties With Patent License Agreement

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- Definition

Number of Petitions Filed

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- Definition

Royalty Expense, License Agreement, Percentage of Future Sales

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- Definition

Royalty Expense, Percentage of Precision Oncology Testing Revenue

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Section 50
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-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 45
-Paragraph 1
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- Definition

The net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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-Paragraph 4
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- Definition

Accumulated amortization of deferred income and initial direct costs pertaining to direct financing leases, which resulted from producing constant periodic rates of return on the net investments in the leases over their respective lease terms.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 30
-Section 35
-Paragraph 23
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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

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- 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.

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Amount awarded from other party in judgment or settlement of litigation.

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Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

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Commitments and Contingencies - Narrative (Details)		1 Months Ended			3 Months Ended			9 Months Ended
Commitments and Contingencies - Narrative (Details)	Dec. 31, 2017 USD ($)	Jul. 31, 2018 USD ($)	Nov. 30, 2017 patent	May 31, 2016 patent	Sep. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) party	Sep. 30, 2017 USD ($)	May 31, 2018 USD ($)	Apr. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)
Lessee, Lease, Description [Line Items]
Operating leases, rent expense					$ 1,200,000		$ 200,000	$ 3,400,000	$ 724,000
Capital leases, contractual term								4 years
Number of parties with patent license agreement \| party								4
Royalty expense					$ 319,000		$ 205,000	$ 936,000	$ 754,000
Percentage of precision oncology testing revenue					2.00%		2.00%	2.00%	3.00%
Manufacturing Equipment
Lessee, Lease, Description [Line Items]
Capital Leased Assets, Gross											$ 346,000	$ 554,000
Capital lease obligations										$ 554,000
Accumulated amortization										219,000
Decrease in capital lease obligation										$ 323,000
Minimum
Lessee, Lease, Description [Line Items]
Percentage of future sales in which patents are used in the product or service sold								2.50%
Maximum
Lessee, Lease, Description [Line Items]
Percentage of future sales in which patents are used in the product or service sold								3.00%
Other Income
Lessee, Lease, Description [Line Items]
Amount awarded from other party						$ 4,250,000
Foundation Medicine, Inc. vs. Guardant Health, Inc..
Lessee, Lease, Description [Line Items]
Number of petitions filed \| patent				3
Payments for legal settlements		$ 3,000,000
Foundation Medicine, Inc. vs. Guardant Health, Inc.. \| General and administrative expense
Lessee, Lease, Description [Line Items]
Litigation settlement, expense	$ 3,000,000
Personal Genome Diagnostics, Inc. vs. Guardant Health, Inc.
Lessee, Lease, Description [Line Items]
Number of petitions filed \| patent			2
Number of asserted patents \| patent			2