Note 12 - Share-based Compensation - Summary of Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Share-based Compensation Expense	$ 2,105	$ 2,050	$ 6,301	$ 6,187
Share-Based Payment Arrangement, Option [Member]
Share-based Compensation Expense	1,195	1,157	3,580	3,557
Performance Share Units [Member]
Share-based Compensation Expense	855	831	2,550	2,456
Deferred Share Units [Member]
Share-based Compensation Expense	$ 55	$ 62	$ 171	$ 174