Contigencies And Commitments	12 Months Ended
Dec. 31, 2018
Contigencies And Commitments [Abstract]
Contigencies And Commitments	20. CONTINGENCIES AND COMMITMENTS The Company is a defendant along with a number of other parties in lawsuits alleging that plaintiffs have or may have contracted asbestos-related diseases as a result of exposure to asbestos products or equipment containing asbestos sold by one or more named defendants. These lawsuits relate to the discontinued heat technologies segment which was sold in March 2005. Due to the non-informative nature of the complaints, the Company does not know whether any of the complaints state valid claims against the Company. Certain insurance carriers have informed the Company that the primary policies for the period August 1, 1970-1978 have been exhausted and that the carriers will no longer provide defense and insurance coverage under those policies. However, the Company has other primary and excess insurance policies that the Company believes afford coverage for later years. Some of these other primary insurers have accepted defense and insurance coverage for these suits, and some of them have either ignored the Company’s tender of defense of these cases, or have denied coverage, or have accepted the tenders but asserted a reservation of rights and/or advised the Company that they need to investigate further. Because settlement payments are applied to all years a litigant was deemed to have been exposed to asbestos, the Company believes that it will have funds available for defense and insurance coverage under the non-exhausted primary and excess insurance policies. However, unlike the older policies, the more recent policies have deductible amounts for defense and settlements costs that the Company will be required to pay; accordingly, the Company expects that its litigation costs will increase in the future. Further, many of the policies covering later years (approximately 1984 and thereafter) have exclusions for any asbestos products or operations, and thus do not provide insurance coverage for asbestos-related lawsuits. The Company does not believe that the asserted exhaustion of some of the primary insurance coverage for the 1970-1978 period will have a material adverse effect on its financial condition, liquidity, or results of operations. Management believes that the number of insurance carriers involved in the defense of the suits, and the significant number of policy years and policy limits under which these insurance carriers are insuring the Company, make the ultimate disposition of these lawsuits not material to the Company's consolidated financial position or results of operations. The Company’s former wholly owned French subsidiary, Selas SAS, filed for insolvency in France. The Company may be subject to additional litigation or liabilities as a result of the completion of the French insolvency proceeding, including liabilities under guarantees aggregating approximately $448. The Company is also involved from time to time in other lawsuits arising in the normal course of business. While it is not possible to predict with certainty the outcome of these matters, management is of the opinion that the disposition of these lawsuits and claims will not materially affect our consolidated financial position, liquidity or results of operations. Total expense for 2018, 2017 and 2016 under leases pertaining primarily to engineering, manufacturing, sales and administrative facilities, with an initial term of one year or more, aggregated $2,327, $1,728, and $1,498, respectively. Remaining payments under such leases are as follows: 2019 - $2,417; 2020 - $2,255; 2021 - $1,689; 2022 - $950; 2023 - $188, which includes three leased facility in Minnesota, two that expire in 2022 and one that expires in 2023, one leased facility in Illinois that expires in 2021, one leased facility in Singapore that expires in 2020, one leased facility in Indonesia that expires in 2021, one leased facility in the United Kingdom that expires in 2021, and one leased facility in Germany that expires in 2022. Certain leases contain renewal options as provided in the lease agreements. On October 5, 2007, the Company entered into employment agreements with its executive officers. The agreements call for payments ranging from one to two years base salary and unpaid bonus, if any, to the executives should there be a change of control as defined in the agreement and the executives are not retained for a period of at least one year following such change of control. Under the agreements, all stock options granted to the executives would vest immediately and be exercisable in accordance with the terms of such stock options. The Company also agreed that if it enters into an agreement to sell substantially all of its assets, it will obligate the buyer to fulfill its obligations pursuant to the agreements. The agreements terminate, except to the extent that any obligation remains unpaid, upon the earlier of termination of the executive’s employment prior to a change of control or asset sale for any reason or the termination of the executive after a change of control for any reason other than by involuntary termination as defined in the agreements.

20. CONTINGENCIES AND COMMITMENTS

The Company is a defendant along with a number of other parties in lawsuits alleging that plaintiffs have or may have contracted asbestos-related diseases as a result of exposure to asbestos products or equipment containing asbestos sold by one or more named defendants. These lawsuits relate to the discontinued heat technologies segment which was sold in March 2005. Due to the non-informative nature of the complaints, the Company does not know whether any of the complaints state valid claims against the Company. Certain insurance carriers have informed the Company that the primary policies for the period August 1, 1970-1978 have been exhausted and that the carriers will no longer provide defense and insurance coverage under those policies. However, the Company has other primary and excess insurance policies that the Company believes afford coverage for later years. Some of these other primary insurers have accepted defense and insurance coverage for these suits, and some of them have either ignored the Company’s tender of defense of these cases, or have denied coverage, or have accepted the tenders but asserted a reservation of rights and/or advised the Company that they need to investigate further. Because settlement payments are applied to all years a litigant was deemed to have been exposed to asbestos, the Company believes that it will have funds available for defense and insurance coverage under the non-exhausted primary and excess insurance policies. However, unlike the older policies, the more recent policies have deductible amounts for defense and settlements costs that the Company will be required to pay; accordingly, the Company expects that its litigation costs will increase in the future. Further, many of the policies covering later years (approximately 1984 and thereafter) have exclusions for any asbestos products or operations, and thus do not provide insurance coverage for asbestos-related lawsuits. The Company does not believe that the asserted exhaustion of some of the primary insurance coverage for the 1970-1978 period will have a material adverse effect on its financial condition, liquidity, or results of operations. Management believes that the number of insurance carriers involved in the defense of the suits, and the significant number of policy years and policy limits under which these insurance carriers are insuring the Company, make the ultimate disposition of these lawsuits not material to the Company's consolidated financial position or results of operations.

The Company’s former wholly owned French subsidiary, Selas SAS, filed for insolvency in France. The Company may be subject to additional litigation or liabilities as a result of the completion of the French insolvency proceeding, including liabilities under guarantees aggregating approximately $448.

The Company is also involved from time to time in other lawsuits arising in the normal course of business. While it is not possible to predict with certainty the outcome of these matters, management is of the opinion that the disposition of these lawsuits and claims will not materially affect our consolidated financial position, liquidity or results of operations.

Total expense for 2018, 2017 and 2016 under leases pertaining primarily to engineering, manufacturing, sales and administrative facilities, with an initial term of one year or more, aggregated $2,327, $1,728, and $1,498, respectively. Remaining payments under such leases are as follows: 2019 - $2,417; 2020 - $2,255; 2021 - $1,689; 2022 - $950; 2023 - $188, which includes three leased facility in Minnesota, two that expire in 2022 and one that expires in 2023, one leased facility in Illinois that expires in 2021, one leased facility in Singapore that expires in 2020, one leased facility in Indonesia that expires in 2021, one leased facility in the United Kingdom that expires in 2021, and one leased facility in Germany that expires in 2022. Certain leases contain renewal options as provided in the lease agreements.

On October 5, 2007, the Company entered into employment agreements with its executive officers. The agreements call for payments ranging from one to two years base salary and unpaid bonus, if any, to the executives should there be a change of control as defined in the agreement and the executives are not retained for a period of at least one year following such change of control. Under the agreements, all stock options granted to the executives would vest immediately and be exercisable in accordance with the terms of such stock options. The Company also agreed that if it enters into an agreement to sell substantially all of its assets, it will obligate the buyer to fulfill its obligations pursuant to the agreements. The agreements terminate, except to the extent that any obligation remains unpaid, upon the earlier of termination of the executive’s employment prior to a change of control or asset sale for any reason or the termination of the executive after a change of control for any reason other than by involuntary termination as defined in the agreements.