Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Total
Balance at beginning of period at Nov. 30, 2016	$ 55	$ 108,438	$ 179	$ (1,049)	$ (16,820)	$ 90,803
Balance (in shares) at Nov. 30, 2016	5,541,029
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		82				82
Repurchase of common stock					(1,474)	(1,474)
Net loss			(939)			(939)
Total other comprehensive income (loss), net of tax				540		540
Balance at end of period at Feb. 28, 2017	$ 55	108,520	(760)	(509)	(18,294)	89,012
Balance (in shares) at Feb. 28, 2017	5,541,029
Balance at beginning of period at Nov. 30, 2017	$ 55	108,770	2,806	(284)	(18,294)	93,053
Balance (in shares) at Nov. 30, 2017	5,541,029
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		90				90
Exercise of stock options, including shares tendered related to stock options exercised		186			(186)
Exercise of stock options, including shares tendered related to stock options exercised (in shares)	5,471
Net loss			(1,723)			(1,723)
Total other comprehensive income (loss), net of tax				2,141		2,141
Balance at end of period at Feb. 28, 2018	$ 55	$ 109,046	1,998	1,821	$ (18,480)	94,440
Balance (in shares) at Feb. 28, 2018	5,546,500
Increase (Decrease) in Stockholders' Equity
Adoption of ASU | ASU 2016-09			879			$ 879
Adoption of ASU | ASU 2018-02			$ 36	$ (36)