Commitments and Contingencies	6 Months Ended
Jun. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	16. Commitments and Contingencies General Litigation The Company is involved in various pending legal proceedings arising out of the ordinary course of business. These proceedings primarily involve commercial claims, product liability claims, personal injury claims, and workers’ compensation claims. None of these legal proceedings are expected to have a material adverse effect on the results of operations, cash flows, or financial condition of the Company. With respect to these proceedings, management believes that the Company will prevail, has adequate insurance coverage or has established appropriate reserves to cover potential liabilities. Any costs that management estimates may be paid related to these proceedings or claims are accrued when the liability is considered probable and the amount can be reasonably estimated. There can be no assurance, however, as to the ultimate outcome of any of these matters, and if all or substantially all of these legal proceedings were to be determined adversely to the Company, there could be a material adverse effect on the results of operations, cash flows, or financial condition of the Company. We have established loss provisions for matters in which losses are probable and can be reasonably estimated. There were no material amounts accrued in the accompanying unaudited condensed consolidated balance sheet for potential litigation as of June 30, 2018 or December 31, 2017. For matters where a reserve has not been established and for which we believe a loss is reasonably possible, as well as for matters where a reserve has been recorded but for which an exposure to loss in excess of the amount accrued is reasonably possible, we believe that such losses, individually and in the aggregate, will not have a material effect on our unaudited condensed consolidated financial statements. The Company also risks exposure to product liability claims in connection with products it has sold and those sold by businesses that the Company acquired. In some cases, third parties have retained responsibility for product liability claims relating to products manufactured or sold prior to the acquisition of the relevant business, and in other cases, the persons from whom the Company has acquired a business may be required to indemnify the Company for certain product liability claims subject to certain caps or limitations on indemnification. However, the Company cannot assure that those third parties will in fact satisfy their obligations with respect to liabilities retained by them or their indemnification obligations. If those third parties become unable to or otherwise do not comply with their respective obligations including indemnity obligations, or if certain product liability claims for which the Company is obligated were not retained by third parties or are not subject to these indemnities, the Company could become subject to significant liabilities or other adverse consequences. Moreover, even in cases where third parties retain responsibility for product liability claims or are required to indemnify the Company, significant claims arising from products that have been acquired could have a material adverse effect on the Company’s ability to realize the benefits from an acquisition, could result in the reduction of the value of goodwill that the Company recorded in connection with an acquisition, or could otherwise have a material adverse effect on the Company’s business, financial condition, or operations. Termination of Defined Benefit Plan The Company commenced its plan to terminate the Altra Industrial Motion, Inc. Retirement Plan (the “Plan”), its frozen U.S. defined benefit pension plan in June 2017 and distributed a portion of the Plan assets during the fourth quarter of 2017 as a partial plan settlement. See Note 8, Pension and Other Employee Benefits, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017. During the first quarter of 2018, the Company completed the Plan termination and made a final contribution of $1.1 million to fully fund the benefit obligation prior to settlement. The Company settled the remaining benefit obligation of approximately $18.7 million by transferring the remaining Plan assets and liability obligations to a third party. The Company recorded an additional settlement loss of $5.1 million related to the Plan in the quarter ended March 31, 2018.

16. Commitments and Contingencies

General Litigation

The Company is involved in various pending legal proceedings arising out of the ordinary course of business. These proceedings primarily involve commercial claims, product liability claims, personal injury claims, and workers’ compensation claims. None of these legal proceedings are expected to have a material adverse effect on the results of operations, cash flows, or financial condition of the Company. With respect to these proceedings, management believes that the Company will prevail, has adequate insurance coverage or has established appropriate reserves to cover potential liabilities. Any costs that management estimates may be paid related to these proceedings or claims are accrued when the liability is considered probable and the amount can be reasonably estimated. There can be no assurance, however, as to the ultimate outcome of any of these matters, and if all or substantially all of these legal proceedings were to be determined adversely to the Company, there could be a material adverse effect on the results of operations, cash flows, or financial condition of the Company. We have established loss provisions for matters in which losses are probable and can be reasonably estimated. There were no material amounts accrued in the accompanying unaudited condensed consolidated balance sheet for potential litigation as of June 30, 2018 or December 31, 2017. For matters where a reserve has not been established and for which we believe a loss is reasonably possible, as well as for matters where a reserve has been recorded but for which an exposure to loss in excess of the amount accrued is reasonably possible, we believe that such losses, individually and in the aggregate, will not have a material effect on our unaudited condensed consolidated financial statements.

The Company also risks exposure to product liability claims in connection with products it has sold and those sold by businesses that the Company acquired. In some cases, third parties have retained responsibility for product liability claims relating to products manufactured or sold prior to the acquisition of the relevant business, and in other cases, the persons from whom the Company has acquired a business may be required to indemnify the Company for certain product liability claims subject to certain caps or limitations on indemnification. However, the Company cannot assure that those third parties will in fact satisfy their obligations with respect to liabilities retained by them or their indemnification obligations. If those third parties become unable to or otherwise do not comply with their respective obligations including indemnity obligations, or if certain product liability claims for which the Company is obligated were not retained by third parties or are not subject to these indemnities, the Company could become subject to significant liabilities or other adverse consequences. Moreover, even in cases where third parties retain responsibility for product liability claims or are required to indemnify the Company, significant claims arising from products that have been acquired could have a material adverse effect on the Company’s ability to realize the benefits from an acquisition, could result in the reduction of the value of goodwill that the Company recorded in connection with an acquisition, or could otherwise have a material adverse effect on the Company’s business, financial condition, or operations.

Termination of Defined Benefit Plan

The Company commenced its plan to terminate the Altra Industrial Motion, Inc. Retirement Plan (the “Plan”), its frozen U.S. defined benefit pension plan in June 2017 and distributed a portion of the Plan assets during the fourth quarter of 2017 as a partial plan settlement. See Note 8, Pension and Other Employee Benefits, to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017. During the first quarter of 2018, the Company completed the Plan termination and made a final contribution of $1.1 million to fully fund the benefit obligation prior to settlement. The Company settled the remaining benefit obligation of approximately $18.7 million by transferring the remaining Plan assets and liability obligations to a third party. The Company recorded an additional settlement loss of $5.1 million related to the Plan in the quarter ended March 31, 2018.