Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Other Liabilities Disclosure [Abstract]

Accrued liabilities

Accrued liabilities consisted of the following at December 31, 2016 and 2015, respectively:

	2016		2015
Accrued insurance	$	2,900,221	$	2,778,368
Accrued payroll and related expenses	4,728,614		1,256,269
Other	5,990,636		3,017,278
Total	$	13,619,471	$	7,051,915