EARNINGS PER SHARE (Tables)

3 Months Ended

Mar. 31, 2012

Earnings Per Share [Abstract]

Reconciliation of basic and diluted earnings per share computations

The following is a reconciliation of basic and diluted earnings per share computations (in thousands except for per share amounts):

	Three Months Ended
	March 31,
	2012		2011
Numerator for basic and diluted earnings per share:
Net Income	$	32,015	$	22,730
Denominator:
Basic shares outstanding	53,227		52,798
Dilutive effect of equity-based compensation awards	261		360
Dilutive shares outstanding	53,488		53,158
Basic earnings per share:
Net Income	$	0.60	$	0.43
Diluted earnings per share:
Net Income	$	0.60	$	0.43