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Employee Benefit Plans | 9 Months Ended
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Sep. 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 |  | Nine Months Ended
| September 30, |  | September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
|  | (in thousands)
Components of net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |
Interest cost | $ | 121 |  | $ | 121 |  | $ | 376 |  | $ | 371
Expected return on plan assets |  | (167) |  |  | (187) |  |  | (519) |  |  | (575)
Net amortization loss |  | 69 |  |  | 53 |  |  | 216 |  |  | 163
Curtailment gain |  | - |  |  | (41) |  |  | - |  |  | (41)
Net periodic benefit cost (income) | $ | 23 |  | $ | (54) |  | $ | 73 |  | $ | (82)
For the nine months ended September 30, 2019 and 2018, the Company contributed $0.6 million and $0.5 million, respectively to its defined benefit pension plans. The Company expects to contribute approximately $0.1 million to its defined benefit pension plans during the remainder of 2019. The Company had an underfunded pension liability of approximately $0.9 million as of December 31, 2018 included in the other long term liabilities li ne 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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