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		114				114
Repurchase of common stock					(1,951)	(1,951)
Net income (loss)			(714)			(714)
Total other comprehensive loss, net of tax				(1,027)		(1,027)
Balance at end of period at May. 31, 2016	$ 55	108,302	403	(2,112)	(15,417)	91,231
Balance (in shares) at May. 31, 2016	5,541,029
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
Balance at end 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		170				170
Repurchase of common stock					(1,474)	(1,474)
Net income (loss)			3,788			3,788
Total other comprehensive loss, net of tax				(6)		(6)
Balance at end of period at May. 31, 2017	$ 55	$ 108,608	$ 3,967	$ (1,055)	$ (18,294)	$ 93,281
Balance (in shares) at May. 31, 2017	5,541,029