Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail)

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Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Earnings Per Share [Abstract]        
Weighted average shares used in basic computations 86,113 102,993 90,732 103,551
Dilutive effect of exercise of equity grants outstanding 5,059 4,090 5,202 4,038
Weighted average shares used in diluted computations 91,172 107,083 95,934 107,589