Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Revenue	$ 54,119	$ 48,774	$ 156,821	$ 140,015
Cost of revenue (excluding depreciation and amortization)	41,583	38,297	120,870	109,507
Sales and marketing	2,591	2,231	7,618	7,167
Technology and development	5,355	4,705	15,737	15,432
General and administrative	5,195	5,224	15,082	16,147
Depreciation and amortization	4,237	3,620	12,317	11,560
Gain on other assets, net	(1,721)	(8,558)	(8,682)	(14,303)
Interest expense	1,225	701	3,695	701
Other expense (income), net	4	65	2	(1,232)
(Loss) income before income tax	(4,350)	2,489	(9,818)	(4,964)
Income tax benefit	(946)	(1,608)	(2,617)	(1,650)
Net (loss) income	$ (3,404)	$ 4,097	$ (7,201)	$ (3,314)
Net (loss) income per share attributable to common stockholders - Basic (in earnings per share)	$ (0.18)	$ 0.22	$ (0.38)	$ (0.18)
Net (loss) income per share attributable to common stockholders - Diluted (in earnings per share)	$ (0.18)	$ 0.22	$ (0.38)	$ (0.18)
Weighted average shares outstanding, basic	18,916	18,444	18,809	18,424
Weighted average shares outstanding, diluted	18,916	18,488	18,809	18,424