Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Reconciliation of weighted-average shares used in computing net income per share

Reconciliation of weighted-average shares used in computing net income per share is as follows (in thousands):

	Three Months Ended
	March 31,
	2013	2012
Weighted average common shares outstanding	58,270	60,855
Dilutive effect of stock options and restricted stock units	760	784
Shares used in computing diluted net income per share	59,030	61,639