Earnings Per Share (Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019	Nov. 30, 2019	Feb. 01, 2019
Numerator:
Net income	$ 51,989	$ 47,461	$ 111,737	$ 77,472
Less: Distributed earnings allocated to nonvested restricted stock	(43)	(14)	(87)	(27)
Less: Undistributed earnings allocated to nonvested restricted stock	(231)	(280)	(511)	(456)
Numerator for basic earnings per share	51,715	47,167	111,139	76,989
Interest expense and amortization of debt issuance costs associated with convertible senior notes, net of taxes	0	0	0	541
Add: Undistributed earnings allocated to nonvested restricted stock	231	280	511	456
Less: Undistributed earnings reallocated to nonvested restricted stock	(223)	(265)	(492)	(421)
Numerator for diluted earnings per share	$ 51,723	$ 47,182	$ 111,158	$ 77,565
Denominator:
Weighted average shares outstanding — basic (in shares)	90,493	87,641	90,169	87,310
Effect of dilutive securities: Share-based payments (in shares)	2,979	4,725	3,459	4,463
Effect of dilutive securities: Convertible senior notes (in shares)	0	0	0	2,862
Weighted average shares outstanding — diluted (in shares)	93,472	92,366	93,628	94,635
Basic earnings (loss) per share (in dollars per share)	$ 0.57	$ 0.54	$ 1.23	$ 0.88
Diluted earnings (loss) per share (in dollars per share)	$ 0.55	$ 0.51	$ 1.19	$ 0.82
Antidilutive securities excluded from computation of earnings per share (in shares)	0	800	0	800
Mortgages and notes payable	$ 1,766,539		$ 1,766,539		$ 1,748,747
1.375% Convertible senior notes due February 1, 2019 [Member] | Convertible Notes Payable [Member]
Mortgages and notes payable						$ 230,000
Senior notes, rate						1.375%