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Employee Benefit Plans | 6 Months Ended
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Jun. 30, 2019
Employee Benefit Plans Disclosure [Abstract] |
Employee Benefit Plans Disclosure [Text Block] | 11. Employee Benefit Plans The Company’s subs idiary in the United Kingdom, Biochrom Limited, maintain s contributory, defined benefit pension plans for substantially all of its employees. These defined benefit pension plans have been closed to new employees since 2014, as well as closed to the future accrual of benefits for existing employees. The components of the Company’s defined benefit pension expense were as follows:
|  | 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)
For the three months ended June 30, 2019 and 2018, the Company contributed $0.2 million, for both periods, to its defined benefit pension plans. For the six months ended June 30, 2019 and 2018, the Compan y contributed $0.4 million and $0.4 million, respectively to its defined benefit pension plans. The Company expects to contribute approximately $0.3 million to its defined benefit pension plans during the remainder of 2019. The Com pany had an underfunded pension liability of approximately $0.9 million as of June 30, 2019 and December 31, 2018 included in the other long term liabilities line item in the consolidated balance sheets.

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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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