Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Operating revenues, net	$ 134,618	$ 164,016
Expenses:
Direct expenses	136,513	152,554
Selling, general and administrative expenses	13,044	11,673
Total operating expenses	149,557	164,227
Loss on disposal of assets		359
Equity in loss (income) of unconsolidated affiliate	1,003
Operating loss	(15,942)	(570)
Interest expense	8,195	7,533
Other income - net	(1,064)	(615)
Total expenses	7,131	6,918
Loss before income taxes	(23,073)	(7,488)
Income tax (benefit) expense	(7,825)	1,444
Net loss	$ (15,248)	$ (8,932)
Weighted average shares outstanding:
Basic	15,689	15,600
Diluted	15,689	15,600
Net loss per share:
Basic	$ (0.97)	$ (0.57)
Diluted	$ (0.97)	$ (0.57)