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Deposits (Tables) | 12 Months Ended
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Dec. 31, 2020
Deposits [Abstract] |
Deposit Asset, Type [Table Text Block] | Deposits and prepaid health insurance consisted of the following:
| December 31,
(in thousands) | 2020 |  | 2019
Prepaid health insurance | $ | 9,000 |  |  | $ | 9,000 |
Deposits – health insurance | 7,900 |  |  | 8,100 |
Deposits – workers’ compensation | 186,331 |  |  | 175,913 |
Deposits and prepaid health insurance | $ | 203,231 |  |  | $ | 193,013 |

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