Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Condensed Consolidated Statements of Income
Operating revenues	$ 100,905	$ 97,252	$ 294,208	$ 291,109
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization)	41,013	42,621	120,415	124,858
Selling, general and administrative	33,146	28,294	92,645	86,280
Depreciation and amortization	22,551	19,717	65,772	57,321
Total operating expenses	96,710	90,632	278,832	268,459
Operating income	4,195	6,620	15,376	22,650
Other income (expense):
Interest expense	(4,148)	(4,103)	(12,651)	(12,401)
Interest income and other	4	13	15	27
Total other expense	(4,144)	(4,090)	(12,636)	(12,374)
Income before income tax provision	51	2,530	2,740	10,276
Income tax provision	(54)	1,014	1,204	4,155
Net income	$ 105	$ 1,516	$ 1,536	$ 6,121
Net income per common share -
Basic (in dollars per share)	$ 0.01	$ 0.14	$ 0.14	$ 0.58
Diluted (in dollars per share)	$ 0.01	$ 0.13	$ 0.14	$ 0.54
Weighted average shares used to compute net income per common share -
Basic (in shares)	11,040,299	10,586,690	10,844,478	10,567,036
Diluted (in shares)	11,318,641	11,311,691	11,275,655	11,329,328