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
Mar. 31, 2013
Mar. 31, 2012
Earnings Per Share [Abstract]    
Weighted average shares used in basic computations 104,121 116,191
Dilutive effect of exercise of equity grants outstanding 3,947 6,022
Dilutive effect of warrants    160
Weighted average shares used in diluted computations 108,068 122,373