EARNINGS PER SHARE (Tables)

3 Months Ended

Mar. 31, 2013

Earnings per share calculation [Table Text Block]

A summary of the earnings per share calculation is as follows (in thousands, except per share amounts):



	Three Months Ended
	March 31,
	2013		2012
Basic earnings per share:
Net income	$	10,903	$	7,461
Weighted-average common shares	28,754		28,227
Basic earnings per share	$	0.38	$	0.26
Diluted earnings per share (1):
Net income	$	10,903	$	7,461
Weighted-average common shares	28,754		28,227
Effect of dilutive securities:
Employee stock plans	1,029		1,208
Diluted weighted-average common shares	29,783		29,435
Diluted earnings per share	$	0.37	$	0.25

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(1)

The Company includes the shares underlying performance-based awards in the calculation of diluted earnings per share if the performance conditions have been satisfied as of the end of the reporting period and excludes such shares when the necessary conditions have not been met. The Company has excluded the shares underlying the 2013 and 2012 awards in the 2013 and 2012 calculation, respectively, as those shares were not contingently issuable as of the end of the period.