Commitments and Contingencies	9 Months Ended
Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company is subject to lawsuits and other claims related to environmental, product and other matters. In determining costs to accrue related to these items, the Company carefully analyzes cases and considers the likelihood of adverse judgments or outcomes, as well as the potential range of possible loss. Any amounts accrued for these matters are monitored on an ongoing basis and are updated based on new developments or new information as it becomes available for each matter. Environmental Protection Agency Notice: In December 2009, the Company received formal, written requests for information from the United States Environmental Protection Agency (EPA) regarding: (i) certificates of conformity for motorcycle emissions and related designations and labels, (ii) aftermarket parts, and (iii) warranty claims on emissions related components. The Company promptly submitted written responses to the EPA’s inquiry and has engaged in information exchanges and discussions with the EPA. In August 2016, the Company entered into a consent decree with the EPA regarding these issues, and the consent decree was subsequently revised in July 2017 (the Settlement). In the Settlement, the Company agreed to, among other things, pay a fine and not sell tuning products unless they are approved by the EPA or California Air Resources Board. In December 2017, the EPA filed the Settlement with the U.S. District Court for the District of Columbia for the purpose of obtaining court approval of the Settlement. Three amicus briefs opposing portions of the Settlement were filed with the court by the deadline of January 31, 2018. On March 1, 2018, the Company and the EPA each filed separate response briefs. The Company anticipates the court will make a decision whether or not to finalize the Settlement in the following months. The Company has an accrual associated with this matter which is included in accrued liabilities in the consolidated balance sheets, and as a result, if it is finalized, the Settlement would not have a material adverse effect on the Company's financial condition or results of operations. The Settlement is not final until it is approved by the court, and if it is not approved by the court, the Company cannot reasonably estimate the impact of any remedies the EPA might seek beyond the Company's current reserve for this matter. York Environmental Matters: The Company is involved with government agencies and groups of potentially responsible parties related to a matter involving the cleanup of soil and groundwater contamination at its York, Pennsylvania facility. The York facility was formerly used by the U.S. Navy and AMF prior to the purchase of the York facility by the Company from AMF in 1981. The Company has been working with the Pennsylvania Department of Environmental Protection (PADEP) since 1986 and with the U.S. Environmental Protection Agency (EPA) in undertaking environmental investigation and remediation activities, including a site-wide remedial investigation/feasibility study (RI/FS). In January 1995, the Company entered into a settlement agreement (the Agreement) with the Navy, and the parties amended the Agreement in 2013 to address ordnance and explosive waste. The Agreement calls for the Navy and the Company to contribute amounts into a trust equal to 53% and 47%, respectively, of costs associated with environmental investigation and remediation activities at the York facility (Response Costs). The trust administers the payment of the Response Costs incurred at the York facility as covered by the Agreement. The Company has an accrual for its estimate of its share of the future Response Costs at the York facility which is included in other long-term liabilities in the consolidated balance sheets. While the work on the RI/FS is now complete, the final remedy has not yet been proposed or approved and, given the uncertainty that exists concerning the nature and scope of additional environmental remediation that may ultimately be required under the approved final remedy, the Company is unable to make a reasonable estimate of those additional costs, if any, that may result. The estimate of the Company's future Response Costs that will be incurred at the York facility is based on reports of independent environmental consultants retained by the Company, the actual costs incurred to date, and the estimated costs to complete the necessary investigation and remediation activities. Product Liability Matters: The Company is involved in product liability suits related to the operation of its business. The Company accrues for claim exposures that are probable of occurrence and can be reasonably estimated. The Company also maintains insurance coverage for product liability exposures. The Company believes that its accruals and insurance coverage are adequate and that product liability suits will not have a material adverse effect on the Company’s consolidated financial statements.

Commitments and Contingencies

The Company is subject to lawsuits and other claims related to environmental, product and other matters. In determining costs to accrue related to these items, the Company carefully analyzes cases and considers the likelihood of adverse judgments or outcomes, as well as the potential range of possible loss. Any amounts accrued for these matters are monitored on an ongoing basis and are updated based on new developments or new information as it becomes available for each matter.

Environmental Protection Agency Notice:

In December 2009, the Company received formal, written requests for information from the United States Environmental Protection Agency (EPA) regarding: (i) certificates of conformity for motorcycle emissions and related designations and labels, (ii) aftermarket parts, and (iii) warranty claims on emissions related components. The Company promptly submitted written responses to the EPA’s inquiry and has engaged in information exchanges and discussions with the EPA. In August 2016, the Company entered into a consent decree with the EPA regarding these issues, and the consent decree was subsequently revised in July 2017 (the Settlement). In the Settlement, the Company agreed to, among other things, pay a fine and not sell tuning products unless they are approved by the EPA or California Air Resources Board. In December 2017, the EPA filed the Settlement with the U.S. District Court for the District of Columbia for the purpose of obtaining court approval of the Settlement. Three amicus briefs opposing portions of the Settlement were filed with the court by the deadline of January 31, 2018. On March 1, 2018, the Company and the EPA each filed separate response briefs. The Company anticipates the court will make a decision whether or not to finalize the Settlement in the following months. The Company has an accrual associated with this matter which is included in accrued liabilities in the consolidated balance sheets, and as a result, if it is finalized, the Settlement would not have a material adverse effect on the Company's financial condition or results of operations. The Settlement is not final until it is approved by the court, and if it is not approved by the court, the Company cannot reasonably estimate the impact of any remedies the EPA might seek beyond the Company's current reserve for this matter.

York Environmental Matters:

The Company is involved with government agencies and groups of potentially responsible parties related to a matter involving the cleanup of soil and groundwater contamination at its York, Pennsylvania facility. The York facility was formerly used by the U.S. Navy and AMF prior to the purchase of the York facility by the Company from AMF in 1981. The Company has been working with the Pennsylvania Department of Environmental Protection (PADEP) since 1986 and with the U.S. Environmental Protection Agency (EPA) in undertaking environmental investigation and remediation activities, including a site-wide remedial investigation/feasibility study (RI/FS).

In January 1995, the Company entered into a settlement agreement (the Agreement) with the Navy, and the parties amended the Agreement in 2013 to address ordnance and explosive waste. The Agreement calls for the Navy and the Company to contribute amounts into a trust equal to 53% and 47%, respectively, of costs associated with environmental investigation and remediation activities at the York facility (Response Costs). The trust administers the payment of the Response Costs incurred at the York facility as covered by the Agreement.

The Company has an accrual for its estimate of its share of the future Response Costs at the York facility which is included in other long-term liabilities in the consolidated balance sheets. While the work on the RI/FS is now complete, the final remedy has not yet been proposed or approved and, given the uncertainty that exists concerning the nature and scope of additional environmental remediation that may ultimately be required under the approved final remedy, the Company is unable to make a reasonable estimate of those additional costs, if any, that may result.

The estimate of the Company's future Response Costs that will be incurred at the York facility is based on reports of independent environmental consultants retained by the Company, the actual costs incurred to date, and the estimated costs to complete the necessary investigation and remediation activities.

Product Liability Matters:

The Company is involved in product liability suits related to the operation of its business. The Company accrues for claim exposures that are probable of occurrence and can be reasonably estimated. The Company also maintains insurance coverage for product liability exposures. The Company believes that its accruals and insurance coverage are adequate and that product liability suits will not have a material adverse effect on the Company’s consolidated financial statements.