The number of active insurance policies as of the Company's balance sheet date.

No definition available.

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Namespace Prefix:	rpxc_
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Balance Type:	na
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- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

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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.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Estimated costs as of the balance sheet date of settling insured claims and costs incurred in the claims settlement process for claims that have not yet been submitted to the insurance company for reimbursement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section W

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 40

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.W)

-URI http://asc.fasb.org/extlink&oid=27015833&loc=d3e570705-122907

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 40

-Section 50

-Paragraph 3

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437

+ Details

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- Details

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Namespace Prefix:	us-gaap_
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- Definition

Number of defendants named in a legal action.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of revenue recognized for the period under subleasing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 55

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6584307&loc=d3e41620-112719

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Cash payments to lessor's for use of assets under operating leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

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Commitments and Contingencies (Detail) (USD $)	0 Months Ended	12 Months Ended
Commitments and Contingencies (Detail) (USD $)	Mar. 31, 2012 defendant sqft	Dec. 31, 2014 insurance_policy	Dec. 31, 2013 insurance_policy	Dec. 31, 2012	Mar. 31, 2012 sqft
Loss Contingencies [Line Items]
Loss Contingency, Number of Defendants	5
Area of real estate property (in square feet)	67,000us-gaap_AreaOfRealEstateProperty				67,000us-gaap_AreaOfRealEstateProperty
Monthly base rent payments		$ 300,000us-gaap_PaymentsForRent
Operating Leases, Income Statement, Sublease Revenue		600,000
Rent expense related to non-cancelable operating leases		3,500,000us-gaap_LeaseAndRentalExpense	3,500,000us-gaap_LeaseAndRentalExpense	2,400,000us-gaap_LeaseAndRentalExpense
Number of active insurance policies		48rpxc_NumberofActiveInsurancePolicies	25rpxc_NumberofActiveInsurancePolicies
Reserves for known and incurred but not reported claims		500,000	600,000
Patent asset purchase commitments		3,000,000us-gaap_OtherCommitment
Maximum
Loss Contingencies [Line Items]
Monthly base rent payments		$ 400,000