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6. Workers' Compensation Insurance and Reserves (Tables)
 12 Months Ended
Dec. 31, 2020
Insurance [Abstract]  
Changes in workers' compensation claims liability
   

December 31,

2020

    

December 31,

2019

  
Estimated future claims liabilities at the beginning of the period   $ 3,844,501     $ -  
Claims paid during the period     (3,779,286 )     (1,237,977 )
Additional future claims liabilities recorded during the period     4,518,853       5,082,478  
Estimated future claims liabilities at the end of the period   $ 4,584,068     $ 3,844,501