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Benefit Plans and Collective Bargaining Agreements | 12 Months Ended
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Dec. 31, 2017
Compensation and Retirement Disclosure [Abstract] |
Benefit Plans and Collective Bargaining Agreements | Benefit Plans and Collective Bargaining Agreements The Company has a 401(k) Employee Stock Ownership Plan (the "401(k)/ESOP Plan") covering all non-union employees. Employees could contribute to the 401(k)/ESOP Plan up to 100 percent of their wages with a maximum of $18,000 for 2017. Under the Economic Growth and Tax Relief Reconciliation Act, employees who are age 50 or older could contribute an additional $6,000 per year for a maximum of $24,000 for 2017. Contributions by the employees are invested in one or more funds at the direction of the employee; however, employee contributions cannot be invested in Company stock. For the year ended December 31, 2015, contributions by the Company were made in cash and then used by the 401(k)/ESOP Plan Trustee to purchase Company stock. Effective January 1, 2016, contributions by the Company are made in accordance with the investment elections made by each participant for their deferral contributions. The Company contributes on behalf of each eligible participant a matching contribution equal to a percentage determined each year by the Board of Directors. For 2017, 2016 and 2015 the maximum was 100 percent of employee contributions up to a maximum of four percent of their eligible compensation. The matching contribution is applied to the employee accounts after each payroll. Matching contributions of approximately $608,473, $516,991 and $541,260 were made for 2017, 2016 and 2015, respectively. The Company may also make a discretionary contribution, which if made, would be distributed to all eligible participants regardless of whether they contribute to the 401(k)/ESOP Plan. No discretionary contributions were made to the 401(k)/ESOP Plan in 2017, 2016 or 2015. The Company also has a 401(k) and Profit Sharing Plan (the "Bristol Plan") covering all employees of the United Steel Workers of America, Local Union 4586 Collective Bargaining Agreement ("CBA"). Employees could contribute to the Bristol Plan up to 60 percent of pretax annual compensation, as defined in the Plan, with a maximum of $18,000 for 2017. Under the Economic Growth and Tax Relief Reconciliation Act, employees who are age 50 or older could contribute an additional $6,000 per year for a maximum of $24,000 for 2017. The Company contributes three percent of a participant's eligible compensation for the plan year, regardless of whether the participants contribute to the Bristol Plan. The Company's contributions were $174,229, $136,763 and $147,005 for 2017, 2016 and 2015, respectively. Additional profit sharing amounts may also be contributed at the option of the Company's Board of Directors, which if made, would be allocated to participants based on the ratio of the participant's compensation to the total compensation of all participants eligible to participate in the Bristol Plan. No discretionary contributions were made to the Bristol Plan in 2017, 2016 or 2015. In connection with the MUSA acquisition discussed in Note 18, the Company assumed the rights and obligations pursuant to the CBA between MUSA and the United Steel Workers of America, Local Union 5852-22 (the " Munhall Union"). As a part of this CBA, the Company assumed the obligation of participating in the Steelworkers Pension Trust (plan number 499; EIN: 23-6648508), a union-sponsored multi-employer defined benefit plan (the "Munhall Plan"), which covers all the Company's eligible Munhall Union employees. The Munhall Plan has a plan year that coincides with the calendar year. Per the most recent available annual funding notice, the plan was at least 80 percent funded for the plan year ended December 31, 2016. Per the terms of the agreement the Company contributes 3.75 percent of each participant's eligible compensation for the plan year. Munhall Union employees make no contributions to the Munhall Plan. The Company's contributions are less than 5 percent of total contributions to the plan based on contributions for the plan year ended December 31, 2016. The Company's contributions to the Munhall Plan totaled $69,245 for the year ended December 31, 2017. Additionally, as part of the CBA with the Munhall Union, members of the union are eligible to make deferral contributions to the Company's 401(k)/ESOP Plan per the plan guidelines; however they do not receive matching contributions of the 401(k)/ESOP Plan. The Company also maintains a CBA with the United Steel Workers of America, Local Union 4564-07, which represents employees at the Specialty-Mineral Ridge facility. In connection with this CBA, the Company contributes to union-sponsored defined contribution retirement plans. Contributions relating to these plans were approximately $29,042, $22,256 and $37,712 for 2017, 2016 and 2015, respectively.

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