Property And Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Schedule Of Property Plant And Equipment

		2016			2015
Land	$	9,992		$	9,864
Buildings and improvements		5,133			5,896
Furniture and fixtures		11,998			10,587
Operating equipment		788,989			783,732
Total property and equipment		816,112			810,079
Accumulated depreciation		(403,104	)		(379,869	)
Property and equipment — net	$	413,008		$	430,210