The components of net periodic defined benefit pension cost for the three months ended May 5, 2018 and April 29, 2017 related to the Company’s defined benefit plans are as follows (in thousands): | | | | | | | | | | | | | | Three Months Ended May 5, 2018 | | SERP | | Foreign Pension Plans | | Total | Service cost | $ | — |
| | $ | 740 |
| | $ | 740 |
| Interest cost | 472 |
| | 55 |
| | 527 |
| Expected return on plan assets | — |
| | (74 | ) | | (74 | ) | Net amortization of unrecognized prior service credit | — |
| | (7 | ) | | (7 | ) | Net amortization of actuarial losses | 47 |
| | 105 |
| | 152 |
| Net periodic defined benefit pension cost | $ | 519 |
| | $ | 819 |
| | $ | 1,338 |
|
| | | | | | | | | | | | | | Three Months Ended April 29, 2017 | | SERP | | Foreign Pension Plans | | Total | Service cost | $ | — |
| | $ | 626 |
| | $ | 626 |
| Interest cost | 461 |
| | 22 |
| | 483 |
| Expected return on plan assets | — |
| | (49 | ) | | (49 | ) | Net amortization of unrecognized prior service credit | — |
| | (7 | ) | | (7 | ) | Net amortization of actuarial losses | 38 |
| | 79 |
| | 117 |
| Net periodic defined benefit pension cost | $ | 499 |
| | $ | 671 |
| | $ | 1,170 |
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