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)		212,000
Issuance of stock under employee stock purchase plan	5,926	$ 2	5,924
Exercise of stock options (in shares)		87,000
Exercise of stock options	2,841	$ 1	2,840
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	(2,398)		(2,398)
Stock-based compensation	21,985		21,985
Equity components of Notes, net of issuance costs and tax	47,456		47,456
Purchase of capped calls, net of tax	(32,507)		(32,507)
Dividends declared	$ (23,456)			(23,456)
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	63,494			63,494
Other comprehensive loss (income)	2,419				2,419
Ending balance (in shares) at Aug. 31, 2021		43,843,000
Ending balance at Aug. 31, 2021	396,773	$ 438	343,239	83,455	(30,359)
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 May. 31, 2021		43,745,000
Beginning balance at May. 31, 2021	$ 365,721	$ 437	333,627	60,301	(28,644)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock under employee stock purchase plan (in shares)		67,000
Issuance of stock under employee stock purchase plan	1,886	$ 1	1,885
Exercise of stock options (in shares)		31,000
Exercise of stock options	1,009		1,009
Withholding tax payments related to net issuance of RSUs	(25)		(25)
Stock-based compensation	6,839		6,839
Equity components of Notes, net of issuance costs and tax	(341)		(341)
Purchase of capped calls, net of tax	245		245
Dividends declared	$ (7,822)			(7,822)
Treasury stock repurchases and retirements (in shares)	0
Net income	$ 30,976			30,976
Other comprehensive loss (income)	(1,715)				(1,715)
Ending balance (in shares) at Aug. 31, 2021		43,843,000
Ending balance at Aug. 31, 2021	$ 396,773	$ 438	343,239	83,455	(30,359)
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)		246,000
Issuance of stock under employee stock purchase plan	7,237	$ 2	7,235
Exercise of stock options (in shares)		78,000
Exercise of stock options	2,879	$ 1	2,878
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	26,110		26,110
Dividends declared	$ (23,525)			(23,525)
Treasury stock repurchases and retirements (in shares)	(1,700,000)	(1,660,000)
Treasury stock repurchases and retirements	$ (75,524)	$ (16)	(19,036)	(56,472)
Net income	71,361			71,361
Other comprehensive loss (income)	$ (6,086)				(6,086)
Ending balance (in shares) at Aug. 31, 2022	42,998,323	42,998,000
Ending balance at Aug. 31, 2022	$ 366,973	$ 430	318,559	86,513	(38,529)
Beginning balance (in shares) at May. 31, 2022		43,454,000
Beginning balance at May. 31, 2022	372,146	$ 435	309,913	93,885	(32,087)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock under employee stock purchase plan (in shares)		68,000
Issuance of stock under employee stock purchase plan	2,024		2,024
Exercise of stock options (in shares)		18,000
Exercise of stock options	643		643
Stock-based compensation	8,639		8,639
Dividends declared	$ (7,783)			(7,783)
Treasury stock repurchases and retirements (in shares)	(500,000)	(542,000)
Treasury stock repurchases and retirements	$ (24,051)	$ (5)	(2,660)	(21,386)
Net income	21,797			21,797
Other comprehensive loss (income)	$ (6,442)				(6,442)
Ending balance (in shares) at Aug. 31, 2022	42,998,323	42,998,000
Ending balance at Aug. 31, 2022	$ 366,973	$ 430	$ 318,559	$ 86,513	$ (38,529)