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Note 9 - Employee Benefit Plans
 3 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Retirement Benefits [Text Block]
9.
Employee Benefit Plans
The Company’s subsidiary in the United Kingdom, Biochrom Limited, maintains
two
contributory, defined benefit pension plans that have been closed to new employees since
2014,
as well as closed to the future accrual of benefits for existing participating employees.
 
For the
three
months ended
March 31, 2020
and
2019,
the Company recorded defined benefit pension expense of
$0.1
million and
$0.2
million, respectively. For each of the
three
months ended
March 31, 2020
and
2019,
the Company contributed
$0.2
million to its defined benefit pension plans. The Company expects to contribute approximately
$0.7
million to its defined benefit pension plans during the remainder of
2020.
As of
December 31, 2019,
the Company pension assets exceeded its pension liability by approximately
$1.1
million that is included in the other long-term asset in the consolidated balance sheets.