General Insurance Expenses

12 Months Ended

Dec. 31, 2017

Selling, General and Administrative Expense [Abstract]

General Insurance Expenses

General Insurance Expenses

The following table summarizes the significant components of general insurance expenses: 

	Year Ended December 31,
	2017		2016		2015
Compensation	$	646,595	$	625,364	$	564,008
Commissions	241,357		222,028		206,360
Other	309,661		333,835		308,628
Total general insurance expenses	$	1,197,613	$	1,181,227	$	1,078,996