Annual report pursuant to Section 13 and 15(d)

Earnings Per Share (Detail)

v3.3.1.900
Earnings Per Share (Detail) - shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Schedule of Diluted shares      
Basic weighted average shares outstanding 58,288,740 57,229,435 57,298,910
Effect of dilutive securities     626,091
Diluted weighted average shares outstanding 58,288,740 57,229,435 57,925,001
Stock options excluded from dilutive calculation because they would be anti-dilutive 5,585,716 2,329,392 3,508,865