Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Balance at beginning of period at Nov. 30, 2013	$ 55	$ 107,603	$ 4,372	$ (449)	$ (13,466)	$ 98,115
Balance (in shares) at Nov. 30, 2013	5,534,687
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		208				208
Exercise of stock options		76				76
Exercise of stock options (shares)	3,208
Dividends declared			(1,030)			(1,030)
Reversal of tax benefit on forfeited stock options						(4)
Net income (loss)			(1,104)			(1,104)
Total other comprehensive income (loss), net of tax				(386)		(386)
Balance at end of period at Nov. 30, 2014	$ 55	107,887	2,238	(835)	(13,466)	95,879
Balance (in shares) at Nov. 30, 2014	5,537,895
Increase (Decrease) in Stockholders' Equity
Stock-based compensation		230				230
Exercise of stock options		71				71
Exercise of stock options (shares)	3,134
Dividends declared			(1,546)			(1,546)
Reversal of tax benefit on forfeited stock options						(9)
Net income (loss)			425			425
Total other comprehensive income (loss), net of tax				(250)		(250)
Balance at end 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		267				$ 267
Exercise of stock options (shares)						0
Dividends declared			(1,514)			$ (1,514)
Repurchase of common stock					(3,354)	(3,354)
Reversal of tax benefit on forfeited stock options		(17)				(17)
Net income (loss)			576			576
Total other comprehensive income (loss), net of tax				36		36
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