Quarterly financial data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly financial data (unaudited)

Schedule of quarterly financial data

	2014
	March 31			June 30			September 30			December 31
Revenue	$	26,452		$	28,396		$	30,822		$	33,627
Loss from operations	$	(5,173	)	$	(3,352	)	$	(3,487	)	$	(6,014	)
Net loss attributable to common stockholders	$	(5,448	)	$	(3,734	)	$	(3,815	)	$	(6,524	)
Basic loss per share	$	(0.15	)	$	(0.10	)	$	(0.11	)	$	(0.18	)
Diluted loss per share	$	(0.15	)	$	(0.10	)	$	(0.11	)	$	(0.18	)

	2013
	March 31			June 30			September 30		December 31
Revenue	$	23,134		$	26,239		$	28,607	$	28,766
(Loss) income from operations	$	(1,502	)	$	(424	)	$	784	$	(752	)
Net (loss) income attributable to common stockholders	$	(1,121	)	$	(399	)	$	354	$	(2,802	)
Basic (loss) earnings per share	$	(0.03	)	$	(0.01	)	$	0.01	$	(0.08	)
Diluted (loss) earnings per share	$	(0.03	)	$	(0.01	)	$	0.01	$	(0.08	)