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Employee Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2019
Employee Benefit Plans Disclosure [Abstract] |
Schedule of Changes in Projected Benefit Obligations [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended
|  | June 30, |  |  | June 30,
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018
|  | (in thousands)
Components of net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |
Interest cost | $ | 123 |  | $ | 118 |  | $ | 255 |  | $ | 250
Expected return on plan assets |  | (170) |  |  | (184) |  |  | (352) |  |  | (388)
Net amortization loss |  | 71 |  |  | 52 |  |  | 147 |  |  | 110
Net periodic benefit cost (income) | $ | 24 |  | $ | (14) |  | $ | 50 |  | $ | (28)

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- Definition Tabular disclosure of the change in the benefit obligation of pension plans and/or other employee benefit plans from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits. + 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 (a) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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