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)		56,000
Issuance of stock under employee stock purchase plan	1,545	$ 1	1,544
Exercise of stock options (in shares)		28,000
Exercise of stock options	917		917
Vesting of restricted stock units and release of deferred stock units (in shares)		28,000
Vesting of restricted stock units and release of deferred stock units	0
Withholding tax payments related to net issuance of RSUs	(892)		(892)
Stock-based compensation	6,784		6,784
Dividends declared	$ (7,851)			(7,851)
Treasury stock repurchases and retirements (in shares)	(400,000)	(353,000)
Treasury stock repurchases and retirements	$ (15,000)	$ (3)	(2,458)	(12,539)
Net income	18,961			18,961
Other comprehensive income	2,076				2,076
Ending balance (in shares) at Feb. 28, 2021		44,000,000
Ending balance at Feb. 28, 2021	352,553	$ 440	311,697	71,118	(30,702)
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]
Issuance of stock under employee stock purchase plan (in shares)		63,000
Issuance of stock under employee stock purchase plan	$ 1,827	$ 1	1,826
Exercise of stock options (in shares)		19,000
Exercise of stock options	635		635
Vesting of restricted stock units and release of deferred stock units (in shares)		90,000
Vesting of restricted stock units and release of deferred stock units	0	$ 1	(1)
Withholding tax payments related to net issuance of RSUs	(3,139)		(3,139)
Stock-based compensation	8,114		8,114
Dividends declared	$ (7,921)			(7,921)
Treasury stock repurchases and retirements (in shares)	(600,000)	(552,000)
Treasury stock repurchases and retirements	$ (25,000)	$ (5)	(10,974)	(14,021)
Net income	20,454			20,454
Other comprehensive income	$ 3,427				3,427
Ending balance (in shares) at Feb. 28, 2022	43,766,260	43,766,000
Ending balance at Feb. 28, 2022	$ 368,323	$ 438	$ 303,240	$ 93,661	$ (29,016)