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RETIREMENT AND DEFERRED COMPENSATION PLANS | 6 Months Ended
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Jun. 30, 2020
RETIREMENT AND DEFERRED COMPENSATION PLANS |
RETIREMENT AND DEFERRED COMPENSATION PLANS | NOTE 8 – RETIREMENT AND DEFERRED COMPENSATION PLANS Components of Net Periodic Benefit Cost: ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Domestic Plans | ​ | Foreign Plans |
Three Months Ended June 30, |  | 2020 |  | 2019 |  | 2020 |  | 2019 |
Service cost | ​ | $ | 3,562 | ​ | $ | 2,775 | ​ | $ | 1,767 | ​ | $ | 1,445 | ​
Interest cost | ​ |  | 1,536 | ​ |  | 1,846 | ​ |  | 340 | ​ |  | 495 | ​
Expected return on plan assets | ​ |  | (2,702) | ​ |  | (3,095) | ​ |  | (631) | ​ |  | (586) | ​
Amortization of net loss | ​ |  | 1,294 | ​ |  | 489 | ​ |  | 514 | ​ |  | 359 | ​
Amortization of prior service cost | ​ |  | — | ​ |  | — | ​ |  | 95 | ​ |  | 113 | ​
Net periodic benefit cost | ​ | $ | 3,690 | ​ | $ | 2,015 | ​ | $ | 2,085 | ​ | $ | 1,826 | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Domestic Plans | ​ | Foreign Plans | ​
Six Months Ended June 30, | ​ | 2020 | ​ | 2019 | ​ | 2020 | ​ | 2019 |
Service cost | ​ | $ | 7,139 | ​ | $ | 5,548 | ​ | $ | 3,535 | ​ | $ | 2,905 | ​
Interest cost | ​ |  | 3,523 | ​ |  | 3,691 | ​ |  | 680 | ​ |  | 996 | ​
Expected return on plan assets | ​ |  | (6,124) | ​ |  | (6,189) | ​ |  | (1,265) | ​ |  | (1,178) | ​
Amortization of net loss | ​ |  | 2,842 | ​ |  | 978 | ​ |  | 1,028 | ​ |  | 722 | ​
Amortization of prior service cost | ​ |  | — | ​ |  | — | ​ |  | 192 | ​ |  | 226 | ​
Net periodic benefit cost | ​ | $ | 7,380 | ​ | $ | 4,028 | ​ | $ | 4,170 | ​ | $ | 3,671 | ​
​ The components of net periodic benefit cost, other than the service cost component, are included in the line “Miscellaneous, net” in the income statement. ​ EMPLOYER CONTRIBUTIONS Although we currently have no minimum funding requirements for our domestic and foreign plans, we contributed $204 thousand to our ongoing domestic supplemental employee retirement plan (“SERP”) annuity contracts during the six months ended June 30, 2020. We plan to contribute approximately an additional $200 thousand to pay our ongoing SERP annuity contracts during 2020. We have contributed approximately $1.1 million to our foreign defined benefit plans during the six months ended June 30, 2020 and do not expect additional significant contributions during 2020.

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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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