Condensed Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Cumulative effect of adoption of ASU 2020-06	Cumulative effect of adoption of ASU 2020-06 Additional Paid-In Capital	Cumulative effect of adoption of ASU 2020-06 Retained Earnings
Beginning balance (in shares) at Nov. 30, 2020		44,241,000
Beginning balance at Nov. 30, 2020	$ 346,013	$ 442	$ 305,802	$ 72,547	$ (32,778)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock under employee stock purchase plan (in shares)		145,000
Issuance of stock under employee stock purchase plan	4,040	$ 1	4,039
Exercise of stock options (in shares)		56,000
Exercise of stock options	1,832	$ 1	1,831
Vesting of restricted stock units and release of deferred stock units (in shares)		100,000
Vesting of restricted stock units and release of deferred stock units	0	$ 1	(1)
Withholding tax payments related to net issuance of RSUs	(2,373)		(2,373)
Stock-based compensation	15,146		15,146
Equity components of Notes, net of issuance costs and tax	47,797		47,797
Purchase of capped calls, net of tax	(32,752)		(32,752)
Dividends declared	$ (15,634)			(15,634)
Treasury stock repurchases and retirements (in shares)	(800,000)	(797,000)
Treasury stock repurchases and retirements	$ (35,000)	$ (8)	(5,862)	(29,130)
Net income	32,518			32,518
Other comprehensive income (loss)	4,134				4,134
Ending balance (in shares) at May. 31, 2021		43,745,000
Ending balance at May. 31, 2021	365,721	$ 437	333,627	60,301	(28,644)
Beginning balance (in shares) at Nov. 30, 2020		44,241,000
Beginning balance at Nov. 30, 2020	$ 346,013	$ 442	305,802	72,547	(32,778)
Ending balance (in shares) at Nov. 30, 2021	44,146,193	44,146,000
Ending balance at Nov. 30, 2021	$ 412,489	$ 441	354,235	90,256	(32,443)	$ (42,563)	$ (47,456)	$ 4,893
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	Accounting Standards Update 2020-06 Cumulative Effect, Period of Adoption [Member]
Beginning balance (in shares) at Feb. 28, 2021		44,000,000
Beginning balance at Feb. 28, 2021	$ 352,553	$ 440	311,697	71,118	(30,702)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock under employee stock purchase plan (in shares)		89,000
Issuance of stock under employee stock purchase plan	2,495	$ 0	2,495
Exercise of stock options (in shares)		28,000
Exercise of stock options	915	$ 1	914
Vesting of restricted stock units and release of deferred stock units (in shares)		72,000
Vesting of restricted stock units and release of deferred stock units	0	$ 1	(1)
Withholding tax payments related to net issuance of RSUs	(1,481)		(1,481)
Stock-based compensation	8,362		8,362
Equity components of Notes, net of issuance costs and tax	47,797		47,797
Purchase of capped calls, net of tax	(32,752)		(32,752)
Dividends declared	$ (7,783)			(7,783)
Treasury stock repurchases and retirements (in shares)	(400,000)	(444,000)
Treasury stock repurchases and retirements	$ (20,000)	$ (5)	(3,404)	(16,591)
Net income	13,557			13,557
Other comprehensive income (loss)	2,058				2,058
Ending balance (in shares) at May. 31, 2021		43,745,000
Ending balance at May. 31, 2021	$ 365,721	$ 437	333,627	60,301	(28,644)
Beginning balance (in shares) at Nov. 30, 2021	44,146,193	44,146,000
Beginning balance at Nov. 30, 2021	$ 412,489	$ 441	354,235	90,256	(32,443)	$ (42,563)	$ (47,456)	$ 4,893
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock under employee stock purchase plan (in shares)		178,000
Issuance of stock under employee stock purchase plan	5,213	$ 2	5,211
Exercise of stock options (in shares)		60,000
Exercise of stock options	2,236	$ 1	2,235
Vesting of restricted stock units and release of deferred stock units (in shares)		188,000
Vesting of restricted stock units and release of deferred stock units	0	$ 2	(2)
Withholding tax payments related to net issuance of RSUs	(5,405)		(5,405)
Stock-based compensation	17,471		17,471
Dividends declared	$ (15,742)			(15,742)
Treasury stock repurchases and retirements (in shares)	(1,100,000)	(1,118,000)
Treasury stock repurchases and retirements	$ (51,473)	$ (11)	(16,376)	(35,086)
Net income	49,564			49,564
Other comprehensive income (loss)	$ 356				356
Ending balance (in shares) at May. 31, 2022	43,454,288	43,454,000
Ending balance at May. 31, 2022	$ 372,146	$ 435	309,913	93,885	(32,087)
Beginning balance (in shares) at Feb. 28, 2022		43,766,000
Beginning balance at Feb. 28, 2022	368,323	$ 438	303,240	93,661	(29,016)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock under employee stock purchase plan (in shares)		115,000
Issuance of stock under employee stock purchase plan	3,386	$ 1	3,385
Exercise of stock options (in shares)		41,000
Exercise of stock options	1,601	$ 1	1,600
Vesting of restricted stock units and release of deferred stock units (in shares)		98,000
Vesting of restricted stock units and release of deferred stock units	0	$ 1	(1)
Withholding tax payments related to net issuance of RSUs	(2,266)		(2,266)
Stock-based compensation	9,357		9,357
Dividends declared	$ (7,821)			(7,821)
Treasury stock repurchases and retirements (in shares)	(600,000)	(566,000)
Treasury stock repurchases and retirements	$ (26,473)	$ (6)	(5,402)	(21,065)
Net income	29,110			29,110
Other comprehensive income (loss)	$ (3,071)				(3,071)
Ending balance (in shares) at May. 31, 2022	43,454,288	43,454,000
Ending balance at May. 31, 2022	$ 372,146	$ 435	$ 309,913	$ 93,885	$ (32,087)