Consolidated Statement of Shareholders' Equity - 9 months ended Aug. 31, 2018 - USD ($) $ in Thousands	Total	Common Stock Class A Common Stock $.01 Par Value	Common Stock Class B Common Stock $.01 Par Value	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance at Nov. 30, 2017	$ 1,459,922	$ 241	$ 197	$ 430,114	$ 1,031,361	$ (1,991)
Activity 12/1/17 — 8/31/18:
Net income	198,047				198,047
Comprehensive income	589					589
Cash dividend ($0.47 per share)	(20,738)				(20,738)
Exercise of stock options	992	1		991
Reacquisition of previously issued common stock	(7,340)	(2)		(1,736)	(5,602)
Other	(890)	1		(891)
Stock-based compensation	2,443			2,443
Balance at Aug. 31, 2018	$ 1,633,025	$ 241	$ 197	$ 430,921	$ 1,203,068	$ (1,402)