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Pension and Postretirement Benefits Other Than Pension Plans | 6 Months Ended
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Jun. 30, 2018
Retirement Benefits [Abstract] |
Pension and Postretirement Benefits Other Than Pension Plans | 10. PENSION AND POSTRETIREMENT BENEFITS OTHER THAN PENSION PLANS: Net periodic pension (income) expense reflected in the accompanying condensed consolidated statements of operations included the following components for the respective periods (in thousands):
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Interest cost |  | $ | 803 |  |  | $ | 901 |  |  | $ | 1,614 |  |  | $ | 1,815 |
Expected return on plan assets |  |  | (1,070 | ) |  |  | (1,011 | ) |  |  | (2,172 | ) |  |  | (2,047 | )
Amortization of net actuarial loss |  |  | 264 |  |  |  | 297 |  |  |  | 519 |  |  |  | 579 |
Total net periodic pension (income) expense |  | $ | (3 | ) |  | $ | 187 |  |  | $ | (39 | ) |  | $ | 347 |
Net postretirement benefit income reflected in the accompanying condensed consolidated statements of operations included the following components for the respective periods (in thousands):
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Interest cost |  | $ | 24 |  |  | $ | 28 |  |  | $ | 48 |  |  | $ | 54 |
Amortization of net actuarial loss |  |  | 65 |  |  |  | 66 |  |  |  | 129 |  |  |  | 123 |
Amortization of prior service credit |  |  | (329 | ) |  |  | (329 | ) |  |  | (657 | ) |  |  | (657 | )
Total net postretirement benefit income |  | $ | (240 | ) |  | $ | (235 | ) |  | $ | (480 | ) |  | $ | (480 | )

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- References No definition available. + Details
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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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