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Equity-Based Compensation - Summary of Equity-Based Compensation Expense (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Equity-Based Compensation |  |  |
Restricted stock units | $ 2,660 us-gaap_RestrictedStockExpense | $ 4,219 us-gaap_RestrictedStockExpense | $ 4,099 us-gaap_RestrictedStockExpense
Service Based Restricted Stock Units [Member] |  |  |
Equity-Based Compensation |  |  |
Restricted stock units | 1,771 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = cts_ServiceBasedRestrictedStockUnitsMember | 2,879 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = cts_ServiceBasedRestrictedStockUnitsMember | 2,939 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = cts_ServiceBasedRestrictedStockUnitsMember
Performance Based Restricted Stock Units [Member] |  |  |
Equity-Based Compensation |  |  |
Restricted stock units | 479 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = cts_PerformanceBasedRestrictedStockUnitsMember | 674 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = cts_PerformanceBasedRestrictedStockUnitsMember | 242 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = cts_PerformanceBasedRestrictedStockUnitsMember
Market Based Restricted Stock Units [Member] |  |  |
Equity-Based Compensation |  |  |
Restricted stock units | 410 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = cts_MarketBasedRestrictedStockUnitsMember | 666 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = cts_MarketBasedRestrictedStockUnitsMember | 918 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = cts_MarketBasedRestrictedStockUnitsMember
RSUs [Member] |  |  |
Equity-Based Compensation |  |  |
Restricted stock units | 2,660 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember | 4,219 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember | 4,099 us-gaap_RestrictedStockExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember
Income tax benefit | $ 1,000 us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember | $ 1,600 us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember | $ 1,600 us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockUnitsRSUMember

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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + 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 (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation. + 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
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