Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Reconciliation of Shares Used to Compute Basic and Diluted Earnings per Share

The following is a reconciliation of the shares used to compute basic and diluted earnings per share (in thousands):

	Three Months Ended
	March 31,
	2018	2017
Weighted average number of common shares outstanding used to compute basic earnings per share	52,178	52,658
Dilutive effect of stock-based awards	653	591
Number of shares used to compute diluted earnings per share	52,831	53,249