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, 2015	$ 55	$ 108,188	$ 1,117	$ (1,085)	$ (13,466)	$ 94,809
Balance (in shares) at Nov. 30, 2015	5,541,029
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		185				185
Repurchase of common stock					(1,951)	(1,951)
Net income (loss)			(763)			(763)
Total other comprehensive loss, net of tax				(1,772)		(1,772)
Balance at end of period at Aug. 31, 2016	$ 55	108,373	354	(2,857)	(15,417)	90,508
Balance (in shares) at Aug. 31, 2016	5,541,029
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		260				260
Repurchase of common stock					(1,474)	(1,474)
Net income (loss)			5,117			5,117
Total other comprehensive loss, net of tax				(699)		(699)
Balance at end of period at Aug. 31, 2017	$ 55	$ 108,698	$ 5,296	$ (1,748)	$ (18,294)	$ 94,007
Balance (in shares) at Aug. 31, 2017	5,541,029