Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Condensed Consolidated Statements of Income (Loss)
Operating revenues	$ 91,013	$ 97,848	$ 276,821	$ 296,183
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization)	40,100	41,903	121,472	124,987
Selling, general and administrative	29,827	29,206	87,830	88,625
Depreciation and amortization	22,174	23,036	65,186	67,479
Total operating expenses	92,101	94,145	274,488	281,091
Operating income (loss)	(1,088)	3,703	2,333	15,092
Other income (expense):
Interest expense	(4,150)	(4,156)	(11,962)	(12,879)
Loss on early extinguishment of debt			(4,826)
Total other expense	(4,150)	(4,156)	(16,788)	(12,879)
Income (loss) before income tax provision (benefit)	(5,238)	(453)	(14,455)	2,213
Income tax provision (benefit)	87,481	(174)	83,693	892
Net income (loss)	$ (92,719)	$ (279)	$ (98,148)	$ 1,321
Net income (loss) per common share -
Basic (in dollars per share)	$ (8.00)	$ (0.02)	$ (8.48)	$ 0.11
Diluted (in dollars per share)	$ (8.00)	$ (0.02)	$ (8.48)	$ 0.11
Weighted average shares used to compute net income (loss) per common share -
Basic (in shares)	11,587,963	11,512,280	11,568,540	11,499,947
Diluted (in shares)	11,587,963	11,512,280	11,568,540	11,539,828