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Earnings Per Common Share - Schedule of Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Basic earnings per common share:
Net income		$ 123,132	$ 66,940	$ 324,711	$ 184,779
Less: net income allocated to participating securities	[1]	(1,070)	(645)	(2,894)	(1,725)
Net income attributable to common stockholders		$ 122,062	$ 66,295	$ 321,817	$ 183,054
Weighted-average common share - basic (shares)		50,601	39,254	50,661	39,483
Basic earnings per common share		$ 2.41	$ 1.69	$ 6.35	$ 4.64
Diluted earnings per common share:
Net income		$ 123,132	$ 66,940	$ 324,711	$ 184,779
Less: net income allocated to participating securities	[1]	(1,066)	(643)	(2,883)	(1,717)
Net income attributable to common stockholders		$ 122,066	$ 66,297	$ 321,828	$ 183,063
Basic		50,601	39,254	50,661	39,483
Stock options and restricted stock units (shares)		244	221	242	247
Weighted-average common shares-diluted (shares)		50,845	39,475	50,903	39,730
Diluted earnings per common share		$ 2.40	$ 1.68	$ 6.32	$ 4.61
Anti-dilutive shares excluded from diluted earnings per share calculation (shares)		121	89	120	61
[1] Restricted stock awards granted to employees by the Company are considered participating securities

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