Quarterly financial data (unaudited)

12 Months Ended

Dec. 31, 2012

Quarterly financial data (unaudited)

Quarterly financial data (unaudited)

16. Quarterly financial data (unaudited)

        Summarized unaudited quarterly financial data are as follows:

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

        During the quarter ended December 31, 2012, the Company recorded certain out-of-period adjustments that increased net income attributable to common stockholders by $243. The impact of these out-of-period adjustments is not considered material, individually and in the aggregate, to any of the current or prior quarterly or annual periods.