Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Summary of Dilutive Effect for Awards with Exercise Price Less Than Average Stock Price

Weighted average shares were as follows (in thousands):

	Three months ended September 30,		Nine months ended September 30,
	2014	2013	2014	2013
Weighted average common shares outstanding, basic	41,034	41,088	41,589	41,048
Dilutive potential common shares	—	—	1,714	1,830
Weighted average common shares outstanding, diluted	41,034	41,088	43,303	42,878
Shares excluded	5,302	5,893	940	946