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PENSION LIABILITY | 3 Months Ended
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Mar. 31, 2020
PENSION LIABILITY |
PENSION LIABILITY | NOTE 17. PENSION LIABILITY In connection with the acquisitions of HiTek Power Group, LumaSense and Artesyn’s Embedded Power business, we assumed the liabilities of its pension plans. In order to measure the expense and related benefit obligation, various assumptions are made including discount rates used to value the obligation, expected return on plan assets used to fund these expenses and estimated future inflation rates. These assumptions are based on historical experience as well as facts and circumstances. An actuarial analysis is used to measure the expense and liability associated with pension benefits. We are committed to make annual fixed payments of $0.8 million into the HiTek Power Limited Pension Scheme through April 30, 2024, and then $1.7 million from May 1, 2024 through November 30, 2033. We are obligated to fund the other pension liabilities each year as incurred. ​ The net pension liability is included in Other long-term liabilities in our Consolidated Balance Sheets as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, |  | December 31,
​ | ​ | 2020 | ​ | 2019
Pension liability | ​ | $ | 66,538 | ​ | $ | 68,359
​ The following table sets forth the components of net periodic pension cost for the three months ended March 31, 2020 and 2019: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, | ​
​ |  | 2020 |  | 2019 | ​
Service cost | ​ | $ | 258 | ​ | $ | — | ​
Interest cost | ​ | ​ | 480 | ​ | ​ | 199 | ​
Expected return on plan assets | ​ | ​ | (148) | ​ | ​ | (170) | ​
Amortization of actuarial gains and losses | ​ | ​ | 116 | ​ | ​ | 118 | ​
Net periodic pension cost | ​ | $ | 706 | ​ | $ | 147 | ​
​

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