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Retirement Benefit Plans | 12 Months Ended
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Dec. 31, 2015
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract] |
Retirement Benefit Plans |
| Retirement Benefit Plans
Substantially all U.S. employees are covered by various retirement benefit plans, including defined benefit pension plans, postretirement medical plans and defined contribution savings plans. Retirement benefits for eligible employees in foreign locations are funded principally through defined benefit plans, annuity or government programs. The total cost of benefits for our plans was $12,428, $11,334 and $11,766 in 2015, 2014 and 2013, respectively. We have a qualified, funded defined benefit retirement plan (the “U.S. Pension Plan”) covering certain current and retired employees in the U.S. Pension Plan benefits are based on the years of service and compensation during the highest five consecutive years of service in the final ten years of employment. No new participants have entered the plan since 2000. During 2015, the plan was amended to freeze benefits for all participants effective January 31, 2017. The plan has 361 participants including 69 active employees as of December 31, 2015. We have a U.S. postretirement medical benefit plan (the “U.S. Retiree Plan”) to provide certain healthcare benefits for U.S. employees hired before January 1, 1999. Eligibility for those benefits is based upon a combination of years of service with us and age upon retirement. Our defined contribution savings plan (“401(k)”) covers substantially all U.S. employees. Under this plan, we match up to 3% of the employee’s annual compensation in cash to be invested per their election. We also make a profit sharing contribution to the 401(k) plan for employees with more than one year of service in accordance with our Profit Sharing Plan. This contribution is based upon our financial performance and can be funded in the form of Tennant stock, cash or a combination of both. Expenses for the 401(k) plan were $8,098, $7,475 and $6,423 during 2015, 2014 and 2013, respectively. We have a U.S. nonqualified supplemental benefit plan (the “U.S. Nonqualified Plan”) to provide additional retirement benefits for certain employees whose benefits under our 401(k) plan or U.S. Pension Plan are limited by either the Employee Retirement Income Security Act or the Internal Revenue Code. We also have defined pension benefit plans in the United Kingdom and Germany (the “U.K. Pension Plan” and the “German Pension Plan”). The U.K. Pension Plan and German Pension Plan cover certain current and retired employees and both plans are closed to new participants. We expect to contribute approximately $243 to our U.S. Nonqualified Plan, $835 to our U.S. Retiree Plan, $308 to our U.K. Pension Plan and $33 to our German Pension Plan in 2016. No contributions to the U.S. Pension Plan are expected to be required during 2016. There were no contributions made to the U.S. Pension Plan during 2015. Weighted-average asset allocations by asset category of the U.S. and U.K. Pension Plans as of December 31, 2015 are as follows:
Asset Category | Fair Value |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Cash and Cash Equivalents | $ | 954 |  |  | $ | 954 |  |  | $ | — |  |  | $ | — |
Mutual Funds: |  |  |  |  |  |  |  |  |  |  |
U.S. Large-Cap | 9,194 |  |  | 9,194 |  |  | — |  |  | — |
U.S. Small-Cap | 2,258 |  |  | 2,258 |  |  | — |  |  | — |
International Equities | 2,206 |  |  | 2,206 |  |  | — |  |  | — |
Fixed-Income Domestic | 32,589 |  |  | 32,589 |  |  | — |  |  | — |
Investment Account held by Pension Plan (1) | 10,691 |  |  | — |  |  | — |  |  | 10,691 |
Total | $ | 57,892 |  |  | $ | 47,201 |  |  | $ | — |  |  | $ | 10,691 |
(1) | This category is comprised of investments in insurance contracts.
Weighted-average asset allocations by asset category of the U.S. and U.K. Pension Plans as of December 31, 2014 are as follows:
Asset Category | Fair Value |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Cash and Cash Equivalents | $ | 486 |  |  | $ | 486 |  |  | $ | — |  |  | $ | — |
Mutual Funds: |  |  |  |  |  |  |  |  |  |  |
U.S. Large-Cap | 12,955 |  |  | 12,955 |  |  | — |  |  | — |
U.S. Small-Cap | 4,004 |  |  | 4,004 |  |  | — |  |  | — |
International Equities | 3,788 |  |  | 3,788 |  |  | — |  |  | — |
Fixed-Income Domestic | 30,652 |  |  | 30,652 |  |  | — |  |  | — |
Investment Account held by Pension Plan (1) | 9,989 |  |  | — |  |  | — |  |  | 9,989 |
Total | $ | 61,874 |  |  | $ | 51,885 |  |  | $ | — |  |  | $ | 9,989 |
(1) | This category is comprised of investments in insurance contracts.
Estimates of the fair value of U.S. and U.K Pension Plan assets are based on the framework established in the accounting guidance for fair value measurements. A brief description of the three levels can be found in Note 12. Equity Securities and Mutual Funds traded in active markets are classified as Level 1. The Investment Account held by the U.K. Pension Plan invests in insurance contracts for purposes of funding the U.K. Pension Plan and is classified as Level 3. The fair value of the Investment Account is the cash surrender values as determined by the provider which are the amounts the plan would receive if the contracts were cashed out at year end. The underlying assets held by these contracts are primarily invested in assets traded in active markets. A reconciliation of the beginning and ending balances of the Level 3 investments of our U.K. Pension Plan during the years ended are as follows:
| 2015 |  | 2014
Fair value at beginning of year | $ | 9,989 |  |  | $ | 9,733 |
Purchases, sales, issuances and settlements, net | 52 |  |  | (96 | )
Net gain | 1,232 |  |  | 974 |
Foreign currency | (582 | ) |  | (622 | )
Fair value at end of year | $ | 10,691 |  |  | $ | 9,989 |
The primary objective of our U.S. and U.K. Pension Plans is to meet retirement income commitments to plan participants at a reasonable cost to us and to maintain a sound actuarially funded status. This objective is accomplished through growth of capital and safety of funds invested. The pension plans' assets are invested in securities to achieve growth of capital over inflation through appreciation and accumulation and reinvestment of dividend and interest income. Investments are diversified to control risk. The target allocation for the U.S. Pension Plan is 60% debt securities and 40% equity. Equity securities within the U.S. Pension Plan do not include any direct investments in Tennant Company Common Stock. The U.K. Pension Plan is invested in insurance contracts with underlying investments primarily in equity and fixed income securities. Our German Pension Plan is unfunded, which is customary in that country. Weighted-average assumptions used to determine benefit obligations as of December 31 are as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2015 |  | 2014 |  | 2015 |  | 2014 |  | 2015 |  | 2014
Discount rate | 4.08 | % |  | 3.76 | % |  | 3.59 | % |  | 3.38 | % |  | 3.70 | % |  | 3.39 | %
Rate of compensation increase | 3.00 | % |  | 3.00 | % |  | 3.50 | % |  | 3.50 | % |  | — |  |  | — |
Weighted-average assumptions used to determine net periodic benefit costs as of December 31 are as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2015 |  | 2014 |  | 2013 |  | 2015 |  | 2014 |  | 2013 |  | 2015 |  | 2014 |  | 2013
Discount rate | 3.76 | % |  | 4.63 | % |  | 3.79 | % |  | 3.38 | % |  | 4.33 | % |  | 4.41 | % |  | 3.39 | % |  | 4.10 | % |  | 3.27 | %
Expected long-term rate of return on plan assets | 5.20 | % |  | 5.70 | % |  | 6.50 | % |  | 4.40 | % |  | 5.60 | % |  | 4.70 | % |  | — |  |  | — |  |  | — |
Rate of compensation increase | 3.00 | % |  | 3.00 | % |  | 3.00 | % |  | 3.50 | % |  | 4.50 | % |  | 4.50 | % |  | — |  |  | — |  |  | — |
The discount rate is used to discount future benefit obligations back to today’s dollars. Our discount rates were determined based on high-quality fixed income investments. The resulting discount rates are consistent with the duration of plan liabilities. The Citigroup Above Median Spot Rate is used in determining the discount rate for the U.S. Plans. The expected return on assets assumption on the investment portfolios for the pension plans is based on the long-term expected returns for the investment mix of assets currently in the portfolio. Management uses historic return trends of the asset portfolio combined with recent market conditions to estimate the future rate of return. The accumulated benefit obligations as of December 31, for all defined benefit plans are as follows:
| 2015 |  | 2014
U.S. Pension Plans | $ | 41,537 |  |  | $ | 45,695 |
U.K. Pension Plan | 9,720 |  |  | 10,658 |
German Pension Plan | 870 |  |  | 1,027 |
Information for our plans with an accumulated benefit obligation in excess of plan assets as of December 31 is as follows:
| 2015 |  | 2014
Accumulated benefit obligation | $ | 2,616 |  |  | $ | 13,872 |
Fair value of plan assets | — |  |  | 9,989 |
As of December 31, 2015, the U.S. Nonqualified and the German Pension Plans had an accumulated benefit obligation in excess of plan assets. As of December 31, 2014, the U.S. Nonqualified, the U.K. Pension and the German Pension Plans had an accumulated benefit obligation in excess of plan assets. Information for our plans with a projected benefit obligation in excess of plan assets as of December 31 is as follows:
| 2015 |  | 2014
Projected benefit obligation | $ | 2,616 |  |  | $ | 14,207 |
Fair value of plan assets | — |  |  | 9,989 |
As of December 31, 2015, the U.S. Nonqualified and the German Pension Plans had a projected benefit obligation in excess of plan assets. As of December 31, 2014, the U.S. Nonqualified, the U.K. Pension and the German Pension Plans had a projected benefit obligation in excess of plan assets. Assumed healthcare cost trend rates as of December 31 are as follows:
| 2015 |  | 2014
Healthcare cost trend rate assumption for the next year | 6.76 | % |  | 7.50 | %
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) | 5.00 | % |  | 5.00 | %
Year that the rate reaches the ultimate trend rate | 2031 |  |  | 2031 |
Assumed healthcare cost trend rates have a significant effect on the amounts reported for healthcare plans. To illustrate, a one-percentage-point change in assumed healthcare cost trends would have the following effects:
| 1-Percentage- Point Decrease |  | 1-Percentage- Point Increase
Effect on total of service and interest cost components | $ | (37 | ) |  | $ | 42 |
Effect on postretirement benefit obligation | $ | (803 | ) |  | $ | 910 |
Summaries related to changes in benefit obligations and plan assets and to the funded status of our defined benefit and postretirement medical benefit plans are as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2015 |  | 2014 |  | 2015 |  | 2014 |  | 2015 |  | 2014
Change in benefit obligation: |  |  |  |  |  |  |  |  |  |  |
Benefit obligation at beginning of year | $ | 47,027 |  |  | $ | 43,653 |  |  | $ | 12,014 |  |  | $ | 11,238 |  |  | $ | 13,292 |  |  | $ | 13,186 |
Service cost | 480 |  |  | 493 |  |  | 153 |  |  | 155 |  |  | 96 |  |  | 128 |
Interest cost | 1,711 |  |  | 1,964 |  |  | 396 |  |  | 476 |  |  | 393 |  |  | 497 |
Plan participants' contributions | — |  |  | — |  |  | 20 |  |  | 21 |  |  | — |  |  | — |
Actuarial (gain) loss | (3,352 | ) |  | 5,907 |  |  | (718 | ) |  | 1,421 |  |  | (1,618 | ) |  | 591 |
Foreign exchange | — |  |  | — |  |  | (681 | ) |  | (815 | ) |  | — |  |  | — |
Benefits paid | (1,944 | ) |  | (1,706 | ) |  | (301 | ) |  | (482 | ) |  | (1,019 | ) |  | (1,110 | )
Settlement | (2,148 | ) |  | (3,284 | ) |  | — |  |  | — |  |  | — |  |  | — |
Benefit obligation at end of year | $ | 41,774 |  |  | $ | 47,027 |  |  | $ | 10,883 |  |  | $ | 12,014 |  |  | $ | 11,144 |  |  | $ | 13,292 |
Change in fair value of plan assets and net accrued liabilities:
Fair value of plan assets at beginning of year | $ | 51,885 |  |  | $ | 52,397 |  |  | $ | 9,989 |  |  | $ | 9,733 |  |  | $ | — |  |  | $ | — |
Actual return on plan assets | (933 | ) |  | 4,236 |  |  | 1,232 |  |  | 974 |  |  | — |  |  | — |
Employer contributions | 341 |  |  | 242 |  |  | 333 |  |  | 365 |  |  | 1,019 |  |  | 1,110 |
Plan participants' contributions | — |  |  | — |  |  | 20 |  |  | 21 |  |  | — |  |  | — |
Foreign exchange | — |  |  | — |  |  | (582 | ) |  | (622 | ) |  | — |  |  | — |
Benefits paid | (1,944 | ) |  | (1,706 | ) |  | (301 | ) |  | (482 | ) |  | (1,019 | ) |  | (1,110 | )
Settlement | (2,148 | ) |  | (3,284 | ) |  | — |  |  | — |  |  | — |  |  | — |
Fair value of plan assets at end of year | 47,201 |  |  | 51,885 |  |  | 10,691 |  |  | 9,989 |  |  | — |  |  | — |
Funded status at end of year | $ | 5,427 |  |  | $ | 4,858 |  |  | $ | (192 | ) |  | $ | (2,025 | ) |  | $ | (11,144 | ) |  | $ | (13,292 | )
Amounts recognized in the Consolidated Balance Sheets consist of:
Noncurrent Other Assets | $ | 7,173 |  |  | $ | 7,051 |  |  | $ | 678 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Current Liabilities | (243 | ) |  | (185 | ) |  | (33 | ) |  | (37 | ) |  | (835 | ) |  | (947 | )
Long-Term Liabilities | (1,503 | ) |  | (2,008 | ) |  | (837 | ) |  | (1,988 | ) |  | (10,309 | ) |  | (12,345 | )
Net accrued asset (liability) | $ | 5,427 |  |  | $ | 4,858 |  |  | $ | (192 | ) |  | $ | (2,025 | ) |  | $ | (11,144 | ) |  | $ | (13,292 | )
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Prior service cost | $ | (42 | ) |  | $ | (109 | ) |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Net actuarial loss | (5,127 | ) |  | (5,993 | ) |  | (111 | ) |  | (1,682 | ) |  | (560 | ) |  | (2,178 | )
Accumulated Other Comprehensive Loss | $ | (5,169 | ) |  | $ | (6,102 | ) |  | $ | (111 | ) |  | $ | (1,682 | ) |  | $ | (560 | ) |  | $ | (2,178 | )
The components of the net periodic benefit cost for the three years ended December 31 were as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2015 |  | 2014 |  | 2013 |  | 2015 |  | 2014 |  | 2013 |  | 2015 |  | 2014 |  | 2013
Service cost | $ | 480 |  |  | $ | 493 |  |  | $ | 690 |  |  | $ | 153 |  |  | $ | 155 |  |  | $ | 142 |  |  | $ | 96 |  |  | $ | 128 |  |  | $ | 154 |
Interest cost | 1,711 |  |  | 1,964 |  |  | 1,803 |  |  | 396 |  |  | 476 |  |  | 422 |  |  | 393 |  |  | 497 |  |  | 443 |
Expected return on plan assets | (2,613 | ) |  | (2,683 | ) |  | (2,911 | ) |  | (433 | ) |  | (539 | ) |  | (402 | ) |  | — |  |  | — |  |  | — |
Amortization of net actuarial loss | 835 |  |  | 147 |  |  | 1,751 |  |  | 54 |  |  | 9 |  |  | 9 |  |  | — |  |  | — |  |  | 201 |
Amortization of prior service cost (credit) | 42 |  |  | 43 |  |  | 73 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (6 | ) |  | (103 | )
Foreign currency | — |  |  | — |  |  | — |  |  | (35 | ) |  | (61 | ) |  | 21 |  |  | — |  |  | — |  |  | — |
Curtailment charge | 25 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Settlement charge | 225 |  |  | 356 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Net periodic benefit cost | $ | 705 |  |  | $ | 320 |  |  | $ | 1,406 |  |  | $ | 135 |  |  | $ | 40 |  |  | $ | 192 |  |  | $ | 489 |  |  | $ | 619 |  |  | $ | 695 |
The changes in Accumulated Other Comprehensive Loss for the three years ended December 31 were as follows:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
| 2015 |  | 2014 |  | 2013 |  | 2015 |  | 2014 |  | 2013 |  | 2015 |  | 2014 |  | 2013
Net actuarial loss (gain) | $ | 195 |  |  | $ | 4,353 |  |  | $ | (9,817 | ) |  | $ | (1,517 | ) |  | $ | 987 |  |  | $ | 467 |  |  | $ | (1,618 | ) |  | $ | 591 |  |  | $ | (1,001 | )
Amortization of prior service (cost) credit | (67 | ) |  | (43 | ) |  | (73 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | 6 |  |  | 103 |
Amortization of net actuarial loss | (1,060 | ) |  | (503 | ) |  | (1,751 | ) |  | (54 | ) |  | (9 | ) |  | (9 | ) |  | — |  |  | — |  |  | (201 | )
Total recognized in other comprehensive (income) loss | $ | (932 | ) |  | $ | 3,807 |  |  | $ | (11,641 | ) |  | $ | (1,571 | ) |  | $ | 978 |  |  | $ | 458 |  |  | $ | (1,618 | ) |  | $ | 597 |  |  | $ | (1,099 | )
Total recognized in net periodic (cost) benefit and other comprehensive (income) loss | $ | (227 | ) |  | $ | 4,127 |  |  | $ | (10,235 | ) |  | $ | (1,436 | ) |  | $ | 1,018 |  |  | $ | 650 |  |  | $ | (1,129 | ) |  | $ | 1,216 |  |  | $ | (404 | )
The following benefit payments, which reflect expected future service, are expected to be paid for our U.S. and Non-U.S. plans:
| U.S. Pension Benefits |  | Non-U.S. Pension Benefits |  | Postretirement Medical Benefits
2016 | $ | 2,296 |  |  | $ | 225 |  |  | $ | 835 |
2017 | 2,450 |  |  | 230 |  |  | 890 |
2018 | 2,594 |  |  | 238 |  |  | 914 |
2019 | 2,573 |  |  | 244 |  |  | 959 |
2020 | 2,637 |  |  | 251 |  |  | 1,010 |
2021 to 2025 | 13,582 |  |  | 1,377 |  |  | 4,574 |
Total | $ | 26,132 |  |  | $ | 2,565 |  |  | $ | 9,182 |
The following amounts are included in Accumulated Other Comprehensive Loss as of December 31, 2015 and are expected to be recognized as components of net periodic benefit cost during 2016:
| Pension Benefits |  | Postretirement Medical Benefits
Net actuarial loss | $ | 64 |  |  | $ | 173 |
Prior service cost | 42 |  |  | — |

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