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Net Income per Share - Earnings Attributable to Common Shareholders and Weighted Average Common Shares Outstanding (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Numerator:      
Consolidated net income $ 35,061 $ 17,876 $ 9,241
Less: Net income attributable to noncontrolling interest (5,740) (4,934) (2,087)
Earnings available for diluted earnings per share 29,321 12,942 7,154
Less: Undistributed net income allocated to participating securities (585) 0 0
Earnings available to common shareholders for basic earnings per share $ 28,736 $ 12,942 $ 7,154
Weighted average common shares outstanding - basic 35,365 35,214 35,413
Weighted average common shares upon conversion of participating securities 835 [1] 0 [1] 0 [1]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 613 268 368
Weighted average common shares outstanding - diluted 36,813 35,482 35,781
Anti-dilutive awards excluded from diluted weighted average shares outstanding 1,803 2,713 2,008
[1] Our earnings per share calculation reflects the weighted average shares issuable upon settlement of the prepaid stock purchase contract component of our 6.00% tangible equity units, issued November 27, 2013.