XML 47 R35.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended | 1 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Feb. 28, 2014
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Total number of weeks in a fiscal year | 52 | 52 | 52 |
Depreciation | $ 3.5 us-gaap_Depreciation | $ 3.2 us-gaap_Depreciation | $ 3.1 us-gaap_Depreciation |
Defined Contribution Plan, Cost Recognized | 2.3 us-gaap_DefinedContributionPlanCostRecognized | 2.0 us-gaap_DefinedContributionPlanCostRecognized | 1.8 us-gaap_DefinedContributionPlanCostRecognized |
Income tax payments to NL | $ 4.4 cix_IncomeTaxPaymentsToParentCompany | $ 14.1 cix_IncomeTaxPaymentsToParentCompany | $ 1.2 cix_IncomeTaxPaymentsToParentCompany |
Stock options outstanding | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |
Minimum | Building |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Property and equipment, estimated useful lives | 15 years |  |  |
Minimum | Equipment and software |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Property and equipment, estimated useful lives | 3 years |  |  |
Maximum | Building |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Property and equipment, estimated useful lives | 40 years |  |  |
Maximum | Equipment and software |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Property and equipment, estimated useful lives | 20 years |  |  |
NL |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Percentage of ownership held by parent company | 87.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = cix_NlIndustriesMember |  |  |
NL | Valhi Inc |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Percentage of ownership held by parent company | 83.00%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_EquityInterestIssuedOrIssuableByTypeAxis = cix_ValhiIncMember / dei_LegalEntityAxis = cix_NlIndustriesMember |  |  |
Contran Corporation |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Voting agreement expiration date | 2017-02 |  |  |
Common stock voting rights | Under a voting agreement entered into by all of the voting stockholders of Contran, effective in February 2014 and as amended, the size of the board of directors of Contran was fixed at five members, Ms. Lisa Simmons, Ms. Connelly and Ms. Annette Simmons (and in the event of their death, their heirs) each has the right to designate one of the five members of the Contran board and the remaining two members of the Contran board must consist of members of Contran management. Ms. Lisa Simmons, Ms. Connelly, and Ms. Annette Simmons each serve as members of the Contran board. The voting agreement expires in February 2017 |  |  |
Contran Corporation | Minimum |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Minimum percentage of voting stock ownership required to designate a board member |  |  |  | 5.00%cix_VotingStockOwnershipPercentageRequiredToDesignateBoardMemberUnderVotingAgreement / dei_LegalEntityAxis = cix_ContranCorporationMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Contran Corporation | Valhi Inc |  |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |  |
Percentage of ownership held by parent company | 93.00%us-gaap_MinorityInterestOwnershipPercentageByParent / us-gaap_EquityInterestIssuedOrIssuableByTypeAxis = cix_ValhiIncMember / dei_LegalEntityAxis = cix_ContranCorporationMember |  |  |

X
- Definition The amount of cash paid during the current period to the parent company for taxes on income. + References No definition available. + Details
Name: | cix_IncomeTaxPaymentsToParentCompany
Namespace Prefix: | cix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total number of weeks in the current fiscal year. + References No definition available. + Details
Name: | cix_NumberOfWeeksInFiscalYear
Namespace Prefix: | cix_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | cix_ScheduleOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | cix_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Expiration date of voting agreement among the voting stockholders of the private parent company. + References No definition available. + Details
Name: | cix_VotingAgreementExpirationDate
Namespace Prefix: | cix_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

X
- Definition Voting stock ownership percentage of all classes of voting stock required to maintain the right to designate one board member under the voting agreement. + References No definition available. + Details
Name: | cix_VotingStockOwnershipPercentageRequiredToDesignateBoardMemberUnderVotingAgreement
Namespace Prefix: | cix_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 + Details
Name: | us-gaap_CommonStockVotingRights
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: 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=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_Depreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=cix_ContranCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=cix_NlIndustriesMember
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_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |