Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statements of Income (Loss)
Operating revenues	$ 368,419	$ 392,963	$ 393,413
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization)	163,101	165,835	162,474
Selling, general and administrative	114,893	118,420	123,798
Depreciation and amortization	88,424	89,916	87,879
Total operating expenses	366,418	374,171	374,151
Operating income	2,001	18,792	19,262
Other income (expense):
Interest expense	(16,414)	(17,095)	(16,786)
Loss on early extinguishment of debt	(4,826)
Interest income and other			(19)
Total other expense	(21,240)	(17,095)	(16,805)
Income (loss) before income tax provision	(19,239)	1,697	2,457
Income tax provision	88,002	591	1,357
Net income (loss)	$ (107,241)	$ 1,106	$ 1,100
Net income (loss) per common share -
Basic (in dollars per share)	$ (9.270)	$ 0.100	$ 0.10
Diluted (in dollars per share)	$ (9.270)	$ 0.100	$ 0.10
Weighted average shares used to compute net income (loss) per common share -
Basic (in shares)	11,573,435	11,503,296	10,977,341
Diluted (in shares)	11,573,435	11,555,997	11,386,303