Earnings per share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Summary of the Computations of Basic and Diluted Earnings per Share

The following table summarizes the computations of basic and diluted earnings per share:

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2015		2014			2015		2014
Numerator:
Net income (loss), basic and diluted	$	3,024	$	(1,964	)	$	4,036	$	(1,383	)
Denominator:
Total basic weighted-average common shares outstanding		61,171		59,586			60,798		59,356
Effect of dilutive stock options and restricted stock based on treasury stock method		2,072		—			1,829		—
Weighted average diluted shares		63,243		59,586			62,627		59,356
Basic earnings per common share:
Net income (loss) per share-basic	$	0.05	$	(0.03	)	$	0.07	$	(0.02	)
Diluted earnings per common share:
Net income (loss) per share-diluted	$	0.05	$	(0.03	)	$	0.06	$	(0.02	)