Quarterly financial data (unaudited)

12 Months Ended

Dec. 31, 2013

Quarterly financial data (unaudited)

Quarterly financial data (unaudited)

17. Quarterly financial data (unaudited)

        Summarized unaudited quarterly financial data are as follows:

	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	$	(2,627	)
Basic (loss) earnings per share	$	(0.03	)	$	(0.01	)	$	0.01	$	(0.07	)
Diluted (loss) earnings per share	$	(0.03	)	$	(0.01	)	$	0.01	$	(0.07	)

	2012
	March 31		June 30		September 30		December 31
Revenue	$	24,187	$	24,302	$	26,017	$	28,000
Income from operations	$	2,407	$	2,236	$	4,129	$	2,074
Net income attributable to common stockholders	$	1,657	$	1,461	$	2,777	$	1,400
Basic earnings per share	$	0.05	$	0.04	$	0.08	$	0.04
Diluted earnings per share	$	0.05	$	0.04	$	0.07	$	0.04

	2011
	March 31			June 30		September 30		December 31
Revenue	$	21,028		$	22,943	$	24,688	$	25,899
Income from operations	$	1,729		$	2,427	$	2,981	$	4,040
Net (loss) income attributable to common stockholders	$	(148	)	$	1,293	$	1,662	$	1,855
Basic (loss) earnings per share	$	(0.03	)	$	0.06	$	0.05	$	0.06
Diluted (loss) earnings per share	$	(0.03	)	$	0.05	$	0.05	$	0.05

        Earnings (loss) per share are computed separately for each quarter and the full year using the respective weighted average shares. Therefore, the sum of the quarterly earnings (loss) per share amounts may not equal the annual amounts reported.