Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common shares	Treasury shares	Additional paid-in capital	Accumulated other comprehensive loss	Retained earnings
Balance - Beginning of period at Dec. 31, 2013		$ 27,036	$ (10,228)	$ 1,677,894	$ (617)	$ 2,010,009
Common shares issued, net		133		(3,822)
Repurchase of common shares			(1,347)	(285,179)
Share compensation expenses				24,252
Dividends						(89,027)
Other comprehensive loss	$ (2,121)				(2,121)
Net income	381,172					381,172
Net loss (income) attributable to noncontrolling interest	(25,745)					(25,745)
Balance - End of period at Sep. 30, 2014	3,702,410	27,169	(11,575)	1,413,145	(2,738)	2,276,409
Noncontrolling interest at Sep. 30, 2014	522,287
Total shareholders' equity at Sep. 30, 2014	4,224,697
Balance - Beginning of period at Dec. 31, 2014	3,587,958	27,222	(12,545)	1,207,493	(8,556)	2,374,344
Common shares issued, net		504		16,231
Repurchase of common shares			(831)	(203,086)
Share compensation expenses				28,279
Dividends						(86,256)
Other comprehensive loss	(2,313)				(2,313)
Net income	289,032					289,032
Net loss (income) attributable to noncontrolling interest	15,042					15,042
Balance - End of period at Sep. 30, 2015	3,644,560	$ 27,726	$ (13,376)	$ 1,048,917	$ (10,869)	$ 2,592,162
Noncontrolling interest at Sep. 30, 2015	438,427
Total shareholders' equity at Sep. 30, 2015	$ 4,082,987