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Employee Benefit Plan | 12 Months Ended
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Dec. 31, 2017
Employee Benefit Plan [Abstract] |
Employee Benefit Plan | 16. Employee Benefit Plan The Company has a 401(k) defined-contribution plan which permits participating employees to defer up to a maximum of 100% of their compensation, subject to limitations established by the Internal Revenue Service. Employees age 18 and older are eligible to contribute to the plan starting the first day of employment. After completing at least one day of service, employees are eligible to receive matching contributions from the Company. In 2015, 2016, and 2017 the Company matched employees' base pay up to 4% each year. The Company's matching contributions cliff vest after two years of service. The Company recorded compensation expense of $2.8 million, $2.8 million and $3.2 million for the years ended December 31, 2015, 2016 and 2017, respectively, related to its contributions to the plan. The Company may make additional discretionary contributions to the plan of up to 10% of employees' base pay. The Company's discretionary contributions vest 20% per year for an employee's first five years of service. For the years ended December 31, 2015, 2016 and 2017 the Company did not make any additional discretionary contributions. The Company has a defined benefit pension plan for its employees in Japan. All employees of Nu Skin Japan, after certain years of service, are entitled to pension plan benefits when they terminate employment with Nu Skin Japan. The accrued pension liability was $4.8 million, $5.6 million and $6.1 million as of December 31, 2015, 2016 and 2017, respectively. Although Nu Skin Japan has not specifically funded this obligation, as it is not required to do so, Nu Skin Japan believes it maintains adequate cash balances for this defined benefit pension plan. The Company recorded pension expense of $0.7 million, $0.9 million and $0.7 million for the years ended December 31, 2015, 2016 and 2017, respectively.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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