Quarterly Financial Data (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 163.8us-gaap_SalesRevenueNet	$ 188.3us-gaap_SalesRevenueNet	$ 193.0us-gaap_SalesRevenueNet	$ 179.3us-gaap_SalesRevenueNet	$ 194.0us-gaap_SalesRevenueNet	$ 194.4us-gaap_SalesRevenueNet	$ 227.6us-gaap_SalesRevenueNet	$ 207.6us-gaap_SalesRevenueNet	$ 724.4us-gaap_SalesRevenueNet	$ 823.6us-gaap_SalesRevenueNet
Gross profit	15.3us-gaap_GrossProfit	21.2us-gaap_GrossProfit	17.1us-gaap_GrossProfit	17.1us-gaap_GrossProfit	12.8us-gaap_GrossProfit	24.0us-gaap_GrossProfit	19.2us-gaap_GrossProfit	22.1us-gaap_GrossProfit	70.7us-gaap_GrossProfit	78.1us-gaap_GrossProfit	64.7us-gaap_GrossProfit
Net (loss) income	(9.1)us-gaap_NetIncomeLoss	(3.8)us-gaap_NetIncomeLoss	(8.7)us-gaap_NetIncomeLoss	(11.1)us-gaap_NetIncomeLoss	(17.1)us-gaap_NetIncomeLoss	(5.7)us-gaap_NetIncomeLoss	(6.3)us-gaap_NetIncomeLoss	(8.4)us-gaap_NetIncomeLoss	(32.7)us-gaap_NetIncomeLoss	(37.5)us-gaap_NetIncomeLoss	22.6us-gaap_NetIncomeLoss
Basic and diluted (loss) per share (in dollars per share)	$ (0.49)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.21)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.47)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.60)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.93)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.30)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.35)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.45)us-gaap_EarningsPerShareBasicAndDiluted	$ (1.77)us-gaap_EarningsPerShareBasicAndDiluted	$ (2.03)us-gaap_EarningsPerShareBasicAndDiluted
Severance, restructuring costs and special termination benefits									4.0	9.9	3.8
Business process re-engineering									1.8	2.7	0
Legal fees and settlements									1.5tecua_LegalFeesandSettlements	0.3tecua_LegalFeesandSettlements	0tecua_LegalFeesandSettlements
Environmental reserve for sold building									1.5us-gaap_EnvironmentalRemediationExpense	0.2us-gaap_EnvironmentalRemediationExpense	0.6us-gaap_EnvironmentalRemediationExpense
Moving costs									$ 0	$ 0.5	$ 0.1

Impairments and restructuring business process re-engineering

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Impairments and restructuring Moving costs

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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