Acquisitions	12 Months Ended
Dec. 31, 2017
Business Combinations [Abstract]
Acquisition	Acquisitions The Company has acquired a number of businesses during the past three years. The results of operations of these acquired businesses have been included in the consolidated results from the respective acquisition dates. The purchase prices for these acquisitions have been allocated to tangible and intangible assets and liabilities of the businesses based upon estimates of their respective fair values. Pro forma operating results for the acquisitions are not presented as the results would not be significantly different than historical results. In the second quarter of 2017, the Company completed its acquisition of the assets of the privately held Gammaflux L.P. business ("Gammaflux"), a leading supplier of hot runner temperature and sequential valve gate control systems to the plastics industry. Gammaflux, which is headquartered in Sterling, Virginia and has offices in Illinois and Germany, provides temperature control solutions for injection molding, extrusion, blow molding, thermoforming, and other applications. Its end markets include packaging, electronics, automotive, household products, medical, and tool building. The Company acquired the assets of Gammaflux for an aggregate purchase price of $8,866, which was financed using cash on hand and borrowings under the Company's revolving credit facility. The purchase price includes adjustments under the terms of the Asset Purchase Agreement, including $2 related to cash acquired. In connection with the acquisition, the Company recorded $1,535 of goodwill and $3,700 of intangible assets. See Note 5 to the Consolidated Financial Statements. The Company incurred $210 of acquisition-related costs during the year ended December 31, 2017 related to the Gammaflux acquisition. These costs include due diligence costs and transaction costs to complete the acquisition and have been recognized in the Consolidated Statements of Income as selling and administrative expenses. The operating results of Gammaflux have been included in the Consolidated Statements of Income for the period ended December 31, 2017 since the date of acquisition. The Company reported $9,081 in net sales for Gammaflux for the year ended December 31, 2017. Gammaflux results have been included within the Industrial segment's operating profit. In the third quarter of 2016, the Company, through three of its subsidiaries (collectively, the “Purchaser”), completed its acquisition of the molds business of Adval Tech Holding AG and Adval Tech Holdings (Asia) Pte. Ltd. ("FOBOHA"). FOBOHA is headquartered in Haslach, Germany and currently operates out of manufacturing facilities located in Germany and China. When acquired, FOBOHA also operated out of a third manufacturing facility located in Switzerland; however, this operation was consolidated and closed during 2017. See Note 8 to the Consolidated Financial Statements. The Company completed its purchase of the Germany and Switzerland businesses on August 31, 2016. The purchase of the China business required government approval which was granted on September 30, 2016. On October 7, 2016, shares of the China operations were subsequently transferred to the Company upon payment, per the terms of the Share Purchase Agreement for these respective operations ("China SPA"). The Company, pursuant to the terms and conditions within the Share Purchase Agreement ("FOBOHA SPA"), assumed economic control of the China business effective August 31, 2016. Having both economic control and the benefits and risks of ownership during the period from August 31, 2016 through September 30, 2016, the Company included the results of the China business within the consolidated results of operations of the Company during this period. FOBOHA specializes in the development and manufacture of complex plastic injection molds for packaging, medical, consumer and automotive applications. The Company acquired FOBOHA for an aggregate cash purchase price of CHF 137,918 ($140,203) which was financed using cash on hand and borrowings under the Company's revolving credit facility. The purchase price includes adjustments under the terms of the FOBOHA SPA, including approximately CHF 11,342 ($11,530) related to cash acquired. In connection with the acquisition, the Company recorded $39,800 of intangible assets and $75,574 of goodwill. See Note 5 to the Consolidated Financial Statements. The Company incurred $2,193 of acquisition-related costs during the year ended December 31, 2016 related to the FOBOHA acquisition. These costs include due diligence costs and transaction costs to complete the acquisition and have been recognized in the Company's Consolidated Statements of Income as selling and administrative expenses. The operating results of FOBOHA have been included in the Consolidated Statements of Income for the period ended December 31, 2016 since the date of acquisition. The Company reported $18,348 in net sales for FOBOHA for the year ended December 31, 2016. FOBOHA results have been included within the Industrial segment's operating profit. In the fourth quarter of 2015, the Company, itself and through two of its subsidiaries, completed the acquisition of privately held Priamus System Technologies AG and two of its subsidiaries (collectively, "Priamus") from Growth Finance AG. Priamus, which has approximately 40 employees, is headquartered in Schaffhausen, Switzerland and has direct sales and service offices in the U.S. and Germany. Priamus is a technology leader in the development of advanced process control systems for the plastic injection molding industry and services many of the world's highest quality plastic injection molders in the medical, automotive, consumer goods, electronics and packaging markets. The Company acquired Priamus for an aggregate cash purchase price of CHF 9,879 ($10,111) which was financed using cash on hand and borrowings under the Company's revolving credit facility. The purchase price includes adjustments under the terms of the Share Purchase Agreement, including CHF 1,556 ($1,592) related to cash acquired. In the third quarter of 2015, the Company, through one of its subsidiaries, completed the acquisition of the Thermoplay business ("Thermoplay") by acquiring all of the capital stock of privately held HPE S.p.A., the parent Company through which Thermoplay operates. Thermoplay’s headquarters and manufacturing facility are located in Pont-Saint-Martin in Aosta, Italy, with technical service capabilities in China, India, France, Germany, United Kingdom, Portugal, and Brazil. Thermoplay specializes in the design, development, and manufacturing of hot runner solutions for plastic injection molding, primarily in the packaging, automotive, and medical end markets. The Company acquired Thermoplay for an aggregate cash purchase price of €58,066 ($63,690), pursuant to the terms of the Sale and Purchase Agreement ("SPA"), which was financed using cash on hand and borrowings under the Company's revolving credit facility. The purchase price includes adjustments under the terms of the SPA, including €17,054 ($18,706) related to cash acquired. The Company incurred $2,195 and $574 of acquisition-related costs during the year ended December 31, 2015 related to the Thermoplay and Priamus acquisitions, respectively. These costs include due diligence costs and transaction costs to complete the acquisitions, and have been recognized in the Company's Consolidated Statements of Income as selling and administrative expenses. The operating results of Thermoplay and Priamus have been included in the Consolidated Statements of Income for the period ended December 31, 2015, since the dates of acquisition. The Company reported $13,593 and $2,028 in net sales for Thermoplay and Priamus, respectively, for the year ended December 31, 2015. Thermoplay and Priamus results have been included within the Industrial segment's operating profit.

Acquisitions

The Company has acquired a number of businesses during the past three years. The results of operations of these acquired businesses have been included in the consolidated results from the respective acquisition dates. The purchase prices for these acquisitions have been allocated to tangible and intangible assets and liabilities of the businesses based upon estimates of their respective fair values. Pro forma operating results for the acquisitions are not presented as the results would not be significantly different than historical results.

In the second quarter of 2017, the Company completed its acquisition of the assets of the privately held Gammaflux L.P. business ("Gammaflux"), a leading supplier of hot runner temperature and sequential valve gate control systems to the plastics industry. Gammaflux, which is headquartered in Sterling, Virginia and has offices in Illinois and Germany, provides temperature control solutions for injection molding, extrusion, blow molding, thermoforming, and other applications. Its end markets include packaging, electronics, automotive, household products, medical, and tool building. The Company acquired the assets of Gammaflux for an aggregate purchase price of $8,866, which was financed using cash on hand and borrowings under the Company's revolving credit facility. The purchase price includes adjustments under the terms of the Asset Purchase Agreement, including $2 related to cash acquired. In connection with the acquisition, the Company recorded $1,535 of goodwill and $3,700 of intangible assets. See Note 5 to the Consolidated Financial Statements.

The Company incurred $210 of acquisition-related costs during the year ended December 31, 2017 related to the Gammaflux acquisition. These costs include due diligence costs and transaction costs to complete the acquisition and have been recognized in the Consolidated Statements of Income as selling and administrative expenses.

The operating results of Gammaflux have been included in the Consolidated Statements of Income for the period ended December 31, 2017 since the date of acquisition. The Company reported $9,081 in net sales for Gammaflux for the year ended December 31, 2017. Gammaflux results have been included within the Industrial segment's operating profit.

In the third quarter of 2016, the Company, through three of its subsidiaries (collectively, the “Purchaser”), completed its acquisition of the molds business of Adval Tech Holding AG and Adval Tech Holdings (Asia) Pte. Ltd. ("FOBOHA"). FOBOHA is headquartered in Haslach, Germany and currently operates out of manufacturing facilities located in Germany and China. When acquired, FOBOHA also operated out of a third manufacturing facility located in Switzerland; however, this operation was consolidated and closed during 2017. See Note 8 to the Consolidated Financial Statements. The Company completed its purchase of the Germany and Switzerland businesses on August 31, 2016. The purchase of the China business required government approval which was granted on September 30, 2016. On October 7, 2016, shares of the China operations were subsequently transferred to the Company upon payment, per the terms of the Share Purchase Agreement for these respective operations ("China SPA"). The Company, pursuant to the terms and conditions within the Share Purchase Agreement ("FOBOHA SPA"), assumed economic control of the China business effective August 31, 2016. Having both economic control and the benefits and risks of ownership during the period from August 31, 2016 through September 30, 2016, the Company included the results of the China business within the consolidated results of operations of the Company during this period.

FOBOHA specializes in the development and manufacture of complex plastic injection molds for packaging, medical, consumer and automotive applications. The Company acquired FOBOHA for an aggregate cash purchase price of CHF 137,918 ($140,203) which was financed using cash on hand and borrowings under the Company's revolving credit facility. The purchase price includes adjustments under the terms of the FOBOHA SPA, including approximately CHF 11,342 ($11,530) related to cash acquired. In connection with the acquisition, the Company recorded $39,800 of intangible assets and $75,574 of goodwill. See Note 5 to the Consolidated Financial Statements.

The Company incurred $2,193 of acquisition-related costs during the year ended December 31, 2016 related to the FOBOHA acquisition. These costs include due diligence costs and transaction costs to complete the acquisition and have been recognized in the Company's Consolidated Statements of Income as selling and administrative expenses.

The operating results of FOBOHA have been included in the Consolidated Statements of Income for the period ended December 31, 2016 since the date of acquisition. The Company reported $18,348 in net sales for FOBOHA for the year ended December 31, 2016. FOBOHA results have been included within the Industrial segment's operating profit.

In the fourth quarter of 2015, the Company, itself and through two of its subsidiaries, completed the acquisition of privately held Priamus System Technologies AG and two of its subsidiaries (collectively, "Priamus") from Growth Finance AG. Priamus, which has approximately 40 employees, is headquartered in Schaffhausen, Switzerland and has direct sales and service offices in the U.S. and Germany. Priamus is a technology leader in the development of advanced process control systems for the plastic injection molding industry and services many of the world's highest quality plastic injection molders in the medical, automotive, consumer goods, electronics and packaging markets. The Company acquired Priamus for an aggregate cash purchase price of CHF 9,879 ($10,111) which was financed using cash on hand and borrowings under the Company's revolving credit facility. The purchase price includes adjustments under the terms of the Share Purchase Agreement, including CHF 1,556 ($1,592) related to cash acquired.

In the third quarter of 2015, the Company, through one of its subsidiaries, completed the acquisition of the Thermoplay business ("Thermoplay") by acquiring all of the capital stock of privately held HPE S.p.A., the parent Company through which Thermoplay operates. Thermoplay’s headquarters and manufacturing facility are located in Pont-Saint-Martin in Aosta, Italy, with technical service capabilities in China, India, France, Germany, United Kingdom, Portugal, and Brazil. Thermoplay specializes in the design, development, and manufacturing of hot runner solutions for plastic injection molding, primarily in the packaging, automotive, and medical end markets. The Company acquired Thermoplay for an aggregate cash purchase price of €58,066 ($63,690), pursuant to the terms of the Sale and Purchase Agreement ("SPA"), which was financed using cash on hand and borrowings under the Company's revolving credit facility. The purchase price includes adjustments under the terms of the SPA, including €17,054 ($18,706) related to cash acquired.

The Company incurred $2,195 and $574 of acquisition-related costs during the year ended December 31, 2015 related to the Thermoplay and Priamus acquisitions, respectively. These costs include due diligence costs and transaction costs to complete the acquisitions, and have been recognized in the Company's Consolidated Statements of Income as selling and administrative expenses.

The operating results of Thermoplay and Priamus have been included in the Consolidated Statements of Income for the period ended December 31, 2015, since the dates of acquisition. The Company reported $13,593 and $2,028 in net sales for Thermoplay and Priamus, respectively, for the year ended December 31, 2015. Thermoplay and Priamus results have been included within the Industrial segment's operating profit.