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Segment and Related Information, Revenue By Major Customer (Details) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Revenue, Major Customer [Line Items] |  |
Percentage contributed in revenue by customers, minimum (in hundredths) | 10.00%par_MinimumPercentageContributedInRevenueByCustomers |
Percentage of revenue generated by customer (in hundredths) | 100.00%us-gaap_ConcentrationRiskPercentage1 | 100.00%us-gaap_ConcentrationRiskPercentage1
Hospitality segment [Member] | McDonald's Corporation [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Percentage of revenue generated by customer (in hundredths) | 16.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_MajorCustomersAxis = par_McdonaldsCorporationMember / us-gaap_StatementBusinessSegmentsAxis = par_HospitalitySegmentMember | 19.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_MajorCustomersAxis = par_McdonaldsCorporationMember / us-gaap_StatementBusinessSegmentsAxis = par_HospitalitySegmentMember
Hospitality segment [Member] | Yum! Brands, Inc. [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Percentage of revenue generated by customer (in hundredths) | 12.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_MajorCustomersAxis = par_YumBrandsIncMember / us-gaap_StatementBusinessSegmentsAxis = par_HospitalitySegmentMember | 13.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_MajorCustomersAxis = par_YumBrandsIncMember / us-gaap_StatementBusinessSegmentsAxis = par_HospitalitySegmentMember
Government segment [Member] | U.S. Department of Defense [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Percentage of revenue generated by customer (in hundredths) | 38.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_MajorCustomersAxis = par_UsDepartmentOfDefenseMember / us-gaap_StatementBusinessSegmentsAxis = par_GovernmentSegmentMember | 37.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_MajorCustomersAxis = par_UsDepartmentOfDefenseMember / us-gaap_StatementBusinessSegmentsAxis = par_GovernmentSegmentMember
All Others [Member] |  |
Revenue, Major Customer [Line Items] |  |
Percentage of revenue generated by customer (in hundredths) | 34.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember | 31.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementBusinessSegmentsAxis = us-gaap_AllOtherSegmentsMember

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- Definition Represents the minimum percentage contributed in revenue by customers. + References No definition available. + Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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