General Insurance Expenses (Tables)

12 Months Ended

Dec. 31, 2016

Selling, General and Administrative Expense [Abstract]

Summary of significant components of general insurance expenses

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

	Year Ended December 31,
	2016		2015		2014
Compensation	$	625,364	$	564,008	$	406,601
Commissions	222,028		206,360		210,797
Other	333,835		308,628		163,593
Total general insurance expenses	$	1,181,227	$	1,078,996	$	780,991