Earnings Per Share (Tables)

9 Months Ended

Aug. 31, 2018

Earnings Per Share, Basic and Diluted [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

Basic and diluted earnings per share were calculated as follows (in thousands, except per share amounts):

	Three Months Ended August 31,						Nine Months Ended August 31,
	2018			2017			2018			2017
Numerator:
Net income	$	87,476		$	50,208		$	73,529		$	96,249
Less: Distributed earnings allocated to nonvested restricted stock	(12		)	(14		)	(37		)	(43		)
Less: Undistributed earnings allocated to nonvested restricted stock	(472		)	(307		)	(388		)	(602		)
Numerator for basic earnings per share	86,992			49,887			73,104			95,604

	Three Months Ended August 31,						Nine Months Ended August 31,
	2018			2017			2018			2017
Effect of dilutive securities:
Interest expense and amortization of debt issuance costs associated with convertible senior notes, net of taxes	796			664			2,389			1,990
Add: Undistributed earnings allocated to nonvested restricted stock	472			307			388			602
Less: Undistributed earnings reallocated to nonvested restricted stock	(416		)	(267		)	(335		)	(528		)
Numerator for diluted earnings per share	$	87,844		$	50,591		$	75,546		$	97,668
Denominator:
Weighted average shares outstanding — basic	87,951			85,974			87,565			85,517
Effect of dilutive securities:
Share-based payments	4,719			4,536			5,246			3,705
Convertible senior notes	8,402			8,402			8,402			8,402
Weighted average shares outstanding — diluted	101,072			98,912			101,213			97,624
Basic earnings per share	$	.99		$	.58		$	.83		$	1.12
Diluted earnings per share	$	.87		$	.51		$	.75		$	1.00