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Accrued Liabilities
12 Months Ended
Dec. 31, 2020
Accrued Liabilities [Abstract]  
Accrued liabilities [Text Block] Accrued Liabilities
 December 31,
(In thousands)20202019
Accrued insurance costs$94,744 $104,557 
Accrued compensation48,027 38,547 
Deferred revenue61,066 52,589 
Taxes other than income48,038 28,397 
Accrued legal settlement5,440 440 
Deferred compensation9,437 9,711 
Accrued interest payable1,041 1,391 
Accrued dividends17,003 15,912 
Accrued other35,787 24,233 
Total Accrued liabilities$320,583 $275,777