Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	(Unaudited)				(Unaudited)
Numerator (both basic and diluted):
Net income (loss)	$	14,737	$	16,550	$	34,368	$	(1,943	)
Denominator:
Denominator for basic earnings per share		41,153,722		40,356,049		40,958,196		40,135,143
Stock options		167,272		422,110		195,703		—
Unvested restricted stock		105,092		557,505		565,695		—
Denominator for diluted earnings per share		41,426,086		41,335,664		41,719,594		40,135,143
Basic earnings (loss) per common share:	$	0.36	$	0.41	$	0.84	$	(0.05	)
Diluted earnings (loss) per common share:	$	0.36	$	0.40	$	0.82	$	(0.05	)