7. Prepaid Expenses (Tables)

12 Months Ended

Dec. 31, 2019

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of prepaid expenses

	December 31,
	2019		2018
Prepaid insurance costs	$	21,090	$	17,501
Prepaid employee benefits		11,587		11,865
Prepaid office and other costs		14,474		13,319
Total prepaid expenses	$	47,151	$	42,685