Earnings Per Share (Tables)

9 Months Ended

Aug. 31, 2017

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,
	2017			2016			2017			2016
Numerator:
Net income	$	50,208		$	39,363		$	96,249		$	68,087
Less: Distributed earnings allocated to nonvested restricted stock	(14		)	(10		)	(43		)	(31		)
Less: Undistributed earnings allocated to nonvested restricted stock	(307		)	(180		)	(602		)	(296		)
Numerator for basic earnings per share	49,887			39,173			95,604			67,760

	Three Months Ended August 31,						Nine Months Ended August 31,
	2017			2016			2017			2016
Effect of dilutive securities:
Interest expense and amortization of debt issuance costs associated with convertible senior notes, net of taxes	664			667			1,990			2,000
Add: Undistributed earnings allocated to nonvested restricted stock	307			180			602			296
Less: Undistributed earnings reallocated to nonvested restricted stock	(267		)	(161		)	(528		)	(264		)
Numerator for diluted earnings per share	$	50,591		$	39,859		$	97,668		$	69,792
Denominator:
Weighted average shares outstanding — basic	85,974			84,457			85,517			85,952
Effect of dilutive securities:
Share-based payments	4,536			2,344			3,705			2,083
Convertible senior notes	8,402			8,402			8,402			8,402
Weighted average shares outstanding — diluted	98,912			95,203			97,624			96,437
Basic earnings per share	$	.58		$	.46		$	1.12		$	.79
Diluted earnings per share	$	.51		$	.42		$	1.00		$	.72