Earnings per share

6 Months Ended

Jun. 30, 2011

Earnings Per Share [Abstract]

Earnings per share

2. Earnings per share

     The Company computes basic earnings (loss) per share by dividing net income (loss) attributable to common stockholders by the weighted average number of common shares outstanding. Diluted earnings per share is computed by dividing net income (loss) attributable to common stockholders by the weighted average number of common shares and dilutive potential common shares then outstanding. Diluted earnings per share reflect the assumed conversion of all dilutive securities, using the treasury stock method. Dilutive potential common shares consist of shares issuable upon the exercise of stock options, shares of non-vested restricted stock units, and settlement of stock appreciation rights. When the Company incurs a net loss, the effect of the Company’s outstanding stock options, stock appreciation rights and restricted stock units are not included in the calculation of diluted loss per share as the effect would be anti-dilutive. Accordingly, basic and diluted net loss per share are identical.

     Approximately 581,000 and 895,000 of potential common shares have not been considered in the diluted earnings per share calculation for the three and six months ended June 30, 2011, respectively, and approximately 3,664,000 of potential common shares have not been considered in the diluted loss per share calculation for the three and six months ended June 30, 2010, respectively, as the effect would be anti-dilutive.

     The following tables set forth the computation of basic and diluted earnings (loss) per share:

	For the Three Months					For the Six Months
	Ended June 30,					Ended June 30,
	2011		2010			2011		2010
Numerator:
Net income (loss) attributable to common stockholders	$	1,441	$	(628	)	$	2,297	$	(157	)
Denominator:
Weighted average shares (basic)		26,829		26,033			26,712		25,973
Dilutive effect of stock options, restricted stock units and stock appreciation rights		999		—			903		—
Weighted average shares (diluted)		27,828		26,033			27,615		25,973
Basic earnings (loss) per share	$	0.05	$	(0.02	)	$	0.09	$	(0.01	)
Diluted earnings (loss) per share	$	0.05	$	(0.02	)	$	0.08	$	(0.01	)