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Investments (Tables) | 3 Months Ended
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Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract] |
Investments schedule [Table Text Block] | The investment balances at March 31, 2022 and December 31, 2021, consisted of the following:
(in thousands) | March 31, 2022 |  | December 31, 2021
Rabbi trust (associated with the Non-Qualified Deferred Compensation Plan) | $ | 11,534 |  |  | $ | 12,069 |
Investments in equity securities | 27 |  |  | 26 |
Total | $ | 11,561 |  |  | $ | 12,095 |

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