Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Condensed Consolidated Statements of Income (Loss)
Operating revenues	$ 91,298	$ 99,541	$ 185,808	$ 198,335
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization)	40,181	40,605	81,372	83,084
Selling, general and administrative	26,608	29,554	58,003	59,419
Depreciation and amortization	21,742	22,493	43,012	44,443
Total operating expenses	88,531	92,652	182,387	186,946
Operating income	2,767	6,889	3,421	11,389
Other income (expense):
Interest expense	(3,819)	(4,484)	(7,812)	(8,724)
Loss on early extinguishment of debt	(4,826)		(4,826)
Total other expense	(8,645)	(4,484)	(12,638)	(8,724)
Income (loss) before income tax provision (benefit)	(5,878)	2,405	(9,217)	2,665
Income tax provision (benefit)	(2,402)	960	(3,788)	1,066
Net income (loss)	$ (3,476)	$ 1,445	$ (5,429)	$ 1,599
Net income (loss) per common share -
Basic (in dollars per share)	$ (0.30)	$ 0.13	$ (0.47)	$ 0.14
Diluted (in dollars per share)	$ (0.30)	$ 0.13	$ (0.47)	$ 0.14
Weighted average shares used to compute net income (loss) per common share -
Basic (in shares)	11,587,963	11,511,591	11,558,667	11,493,712
Diluted (in shares)	11,587,963	11,525,850	11,558,667	11,523,215