XML 85 R68.htm IDEA: XBRL DOCUMENT v3.6.0.2
Per Share Information - Basic and Diluted Earnings Per Share (Detail) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Amounts attributable to common stock:                      
Net income from continuing operations $ 88,530 $ 73,137 $ 16,562 $ 20,496 $ (2,586) $ 43,176 $ 32,007 $ 47,689 $ 198,725 $ 120,286 $ 269,224
Net income (loss) from discontinued operations                 (342) 190,621 27,490
Net income attributable to common stock $ 87,583 $ 73,742 $ 16,562 $ 20,496 $ (5,074) $ 216,388 $ 46,109 $ 53,484 $ 198,383 $ 310,907 $ 296,714
Weighted average shares:                      
Weighted average shares outstanding for basic earnings per share                 157,287 195,113 219,668
Effect of dilutive stock options                 1 7 22
Weighted average shares outstanding for diluted earnings per share                 157,288 195,120 219,690