Condensed Consolidated Statements of Shareholders’ Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Nov. 30, 2019		45,037,000
Beginning balance at Nov. 30, 2019	$ 330,282	$ 450	$ 295,503	$ 64,303	$ (29,974)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of stock under employee stock purchase plan (in shares)		39,000
Issuance of stock under employee stock purchase plan	1,194		1,194
Exercise of stock options (in shares)		62,000
Exercise of stock options	1,941	$ 1	1,940
Vesting of restricted stock units and release of deferred stock units (in shares)		57,000
Vesting of restricted stock units and release of deferred stock units	0	$ 1	(1)
Withholding tax payments related to net issuance of restricted stock units	(1,949)		(1,949)
Stock-based compensation	6,051		6,051
Dividends declared	$ (7,435)			(7,435)
Treasury stock repurchases and retirements (in shares)	(400,000)	(426,000)
Treasury stock repurchases and retirements	$ (20,000)	$ (4)	(6,487)	(13,509)
Net income	21,116			21,116
Other comprehensive income (loss)	(3,243)				(3,243)
Ending balance (in shares) at Feb. 29, 2020		44,769,000
Ending balance at Feb. 29, 2020	$ 327,957	$ 448	296,251	64,475	(33,217)
Beginning balance (in shares) at Nov. 30, 2020	44,240,635	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 restricted stock units	(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 (loss)	$ 2,076				2,076
Ending balance (in shares) at Feb. 28, 2021	43,999,982	44,000,000
Ending balance at Feb. 28, 2021	$ 352,553	$ 440	$ 311,697	$ 71,118	$ (30,702)