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, 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 expense		90				$ 90
Exercise of stock options, including shares tendered related to stock options exercised and tax witholdings		186			(186)
Exercise of stock options, including and shares tendered related to stock options exercised and tax witholdings (in shares)	5,471					5,471
Net loss			(1,723)			$ (1,723)
Total other comprehensive income, 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)
Balance at beginning of period at Nov. 30, 2018	$ 56	112,071	(211)	2,395	(19,483)	94,828
Balance (in shares) at Nov. 30, 2018	5,635,706
Increase (Decrease) in Stockholders' Equity
Stock-based compensation expense		90				90
Net loss			(586)			(586)
Total other comprehensive income, net of tax				(1,458)		(1,458)
Balance at end of period at Feb. 28, 2019	$ 56	$ 112,161	$ (797)	$ 937	$ (19,483)	$ 92,874
Balance (in shares) at Feb. 28, 2019	5,635,706