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Employee benefit plans (Tables)

9 Months Ended

Sep. 30, 2019

Employee benefit plans

Schedule of net periodic benefit cost

The net periodic benefit cost was as follows (in thousands):

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Three Months Ended

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Nine Months Ended

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September 30,

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September 30,

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2019

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2018

2019

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2018

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Service cost

$

1,263

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$

1,041

$

3,813

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$

3,152

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Interest cost

​

84

​

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69

​

253

​

​

208

Expected return on plan assets

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(60)

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(48)

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(180)

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​

(145)

Amortization of prior service cost

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54

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45

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161

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​

135

Amortization of actuarial losses

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74

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66

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186

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​

198

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Net periodic benefit cost

$

1,415

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$

1,173

$

4,233

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$

3,548

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- References

No definition available.

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- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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