Investment in Associated Companies (Tables)

12 Months Ended

Dec. 31, 2021

Investments in Associated Companies [Abstract]

Schedule of Equity Method Investments [Table Text Block]

Year Ended December 31,

2021

2020

2019

Houghton Korea

$

3,808

$

5,241

$

2,337

Nippon Japan

461

853

850

Kelko Panama

154

107

55

Grindaix (1)

(37)

-

-

Primex

4,993

1,151

1,822

Total equity in net income of associated companies

$

9,379

$

7,352

$

5,064

(1) In February 2021, the Company acquired a

38

% ownership interest in Grindaix. From that date through September 2021

when the Company purchased the remaining interest of Grindaix, the Company accounted for its

38

% interest under the

equity method of accounting and recorded equity in net income of associated companies. See Note 2 of Notes to

Consolidated Financial Statements.