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Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details 3) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Significant components of deferred tax assets and liabilities |  |
Postretirement benefits | $ 1,953 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits | $ 1,877 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits
Inventory reserves | 1,567 us-gaap_DeferredTaxAssetsInventory | 1,934 us-gaap_DeferredTaxAssetsInventory
Loss carry-forwards | 23,095 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 36,373 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Credit carry-forwards | 16,903 us-gaap_DeferredTaxAssetsTaxCreditCarryforwards | 15,028 us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Nondeductible accruals | 6,336 cts_DeferredTaxAssetsNonDeductibleAccruals | 6,126 cts_DeferredTaxAssetsNonDeductibleAccruals
Research expenditures | 30,088 cts_DeferredTaxAssetsResearchAndDevelopment | 28,606 cts_DeferredTaxAssetsResearchAndDevelopment
Prepaid charges | 45 cts_DeferredTaxAssetsPrepaidExpenses | 727 cts_DeferredTaxAssetsPrepaidExpenses
Foreign exchange loss | 1,009 us-gaap_DeferredTaxAssetsUnrealizedCurrencyLosses |
Other | 4,102 us-gaap_DeferredTaxAssetsOther | 5,476 us-gaap_DeferredTaxAssetsOther
Gross deferred tax assets | 85,098 us-gaap_DeferredTaxAssetsGross | 96,147 us-gaap_DeferredTaxAssetsGross
Depreciation | 11,073 cts_DeferredTaxLiabilitiesDepreciation | 11,168 cts_DeferredTaxLiabilitiesDepreciation
Pensions | 9,462 cts_DeferredTaxLiabilitiesPensionCost | 19,177 cts_DeferredTaxLiabilitiesPensionCost
Unrealized foreign exchange gain |  | 350 us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains
Subsidiaries' unremitted earnings |  | 2,774 us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings
Other |  | 696 us-gaap_DeferredTaxLiabilitiesOther
Gross deferred tax liabilities | 20,535 us-gaap_DeferredIncomeTaxLiabilities | 34,165 us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax assets | 64,563 cts_DeferredTaxAssetsLiabilitiesBeforeValuationAllowance | 61,982 cts_DeferredTaxAssetsLiabilitiesBeforeValuationAllowance
Deferred tax asset valuation allowance | (12,938)us-gaap_DeferredTaxAssetsValuationAllowance | (14,323)us-gaap_DeferredTaxAssetsValuationAllowance
Total net deferred tax assets | $ 51,625 us-gaap_DeferredTaxAssetsLiabilitiesNet | $ 47,659 us-gaap_DeferredTaxAssetsLiabilitiesNet

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- Definition Deferred tax assets non deductible accruals. + References No definition available. + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Liability -URI http://asc.fasb.org/extlink&oid=6510232 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph b(2) -Article 7 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314 + Details
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- Definition The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Carryforwards -URI http://asc.fasb.org/extlink&oid=6506874 + Details
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