Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues	$ 17,232	$ 17,892	$ 34,722	$ 35,535
Operating expenses
Cost of services	7,875	8,406	16,005	16,663
Selling, general and administrative expenses	2,407	2,457	4,983	5,086
Depreciation and amortization	2,051	2,264	4,089	4,513
Total operating expenses	12,333	13,127	25,077	26,262
Income from operations	4,899	4,765	9,645	9,273
Other income (expense)
Interest expense	(2,721)	(1,991)	(5,203)	(4,039)
Other income (expense)	4	(17)	623	1,046
Total other expenses	(2,717)	(2,008)	(4,580)	(2,993)
Income before income tax expense	2,182	2,757	5,065	6,280
Income tax expense	(858)	(1,102)	(1,991)	(2,490)
Net income	$ 1,324	$ 1,655	$ 3,074	$ 3,790
Weighted average number of common shares outstanding:
Basic (in shares)	3,283,177	3,239,306	3,283,177	3,239,306
Diluted (in shares)	3,380,445	3,285,534	3,378,090	3,283,332
Basic net income per common share (in dollars per share)	$ 0.40	$ 0.51	$ 0.94	$ 1.17
Diluted net income per common share (in dollars per share)	$ 0.39	$ 0.50	$ 0.91	$ 1.15