Quarterly financial data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly financial data (unaudited)

Schedule of quarterly financial data (unaudited)

	Quarter Ended
2015	March 31			June 30			September 30			December 31
Revenue	$	29,392		$	34,277		$	37,186		$	38,771
Loss from operations	$	(7,603	)	$	(5,765	)	$	(4,759	)	$	(3,504	)
Net loss attributable to common stockholders	$	(7,882	)	$	(5,937	)	$	(4,819	)	$	(3,654	)
Basic and diluted loss per share	$	(0.22	)	$	(0.16	)	$	(0.13	)	$	(0.10	)

	Quarter Ended
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 and diluted loss per share	$	(0.15	)	$	(0.10	)	$	(0.11	)	$	(0.18	)