General Insurance Expenses (Tables)

12 Months Ended

Dec. 31, 2015

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,
	2015		2014		2013
Compensation	$	564,008	$	406,601	$	359,280
Commissions	206,360		210,797		184,238
Other	308,628		163,593		106,829
Total general insurance expenses	$	1,078,996	$	780,991	$	650,347