Number of persons employed by the Entity

No definition available.

Name:	dei_EntityNumberOfEmployees
Namespace Prefix:	dei_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Vesting period.

+ References

No definition available.

+ Details

Name:	prgx_VestingPeriod
Namespace Prefix:	prgx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Period Type:	duration

- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=prgx_DirectorGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=prgx_EmployeeGroupMember
Namespace Prefix:
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Stock-Based Compensation (Stock Option Grants) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 employee	Sep. 30, 2012 employee	Dec. 31, 2011 employee
Director Group 1 [Member]
Summary of stock option grants
Vesting Period	1 year
Employee Group 1 [Member]
Summary of stock option grants
Vesting Period	3 years
Stock options [Member]
Summary of stock option grants
Number of Options Granted (shares)	1,801,276
Weighted Average Exercise Price (usd per share)	$ 6.92
Stock options [Member] \| Director Group 1 [Member]
Summary of stock option grants
Number of Options Granted (shares)	51,276	75,490	56,261
Vesting Period	1 year or less	1 year or less	1 year or less
Weighted Average Exercise Price (usd per share)	$ 6.45	$ 5.67	$ 7.55
Weighted Average Grant Date Fair Value (usd per share)	$ 1.89	$ 2.00	$ 3.89
Stock options [Member] \| Director Group 2 [Member]
Summary of stock option grants
Number of Options Granted (shares)			8,546
Vesting Period			3 years
Weighted Average Exercise Price (usd per share)			$ 7.72
Weighted Average Grant Date Fair Value (usd per share)			$ 4.25
Stock options [Member] \| Director [Member]
Summary of stock option grants
Number of Options Granted (shares)		17,092
Vesting Period		3 years
Weighted Average Exercise Price (usd per share)		$ 6.83
Weighted Average Grant Date Fair Value (usd per share)		$ 3.76
Stock options [Member] \| Employee Group 1 [Member]
Summary of stock option grants
Number of Options Granted (shares)	1,480,000	549,875	597,250
Vesting Period	3 years	3 years	3 years
Weighted Average Exercise Price (usd per share)	$ 6.99	$ 5.75	$ 7.54
Weighted Average Grant Date Fair Value (usd per share)	$ 1.81	$ 2.48	$ 4.12
Stock options [Member] \| Employee Group 1 [Member] \| Vest June 27, 2015 [Member]
Summary of stock option grants
Weighted Average Exercise Price (usd per share)	$ 6.36
Stock options [Member] \| Employee Group 1 [Member] \| Vest June 27, 2016 [Member]
Summary of stock option grants
Weighted Average Exercise Price (usd per share)	$ 6.99
Stock options [Member] \| Employee Group 1 [Member] \| Vest June 27, 2017 [Member]
Summary of stock option grants
Weighted Average Exercise Price (usd per share)	$ 7.63
Stock options [Member] \| Employee inducement [Member]
Summary of stock option grants
Number of Options Granted (shares)	270,000	20,000	45,000
Vesting Period			P3Y
Vesting Period	3 years	3 years
Weighted Average Exercise Price (usd per share)	$ 6.64	$ 7.14	$ 8.54
Weighted Average Grant Date Fair Value (usd per share)	$ 1.71	$ 3.81	$ 4.58
Number of employees				2	1	1
Stock options [Member] \| Employee inducement [Member] \| Minimum [Member]
Summary of stock option grants
Vesting Period			3 years
Stock options [Member] \| Employee inducement [Member] \| Maximum [Member]
Summary of stock option grants
Vesting Period			4 years