Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

Schedule of Property Plant and Equipment

Property and equipment at December 31, 2018 and 2017 are as follows:

		2018			2017
Land	$	9,992		$	9,992
Buildings and improvements		5,071			5,071
Furniture and fixtures		14,087			12,453
Operating equipment		710,128			783,211
Total property and equipment		739,278			810,727
Accumulated depreciation		(369,415	)		(413,802	)
Property and equipment — net	$	369,863		$	396,925