Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Balance at Dec. 01, 2012	$ 104,146	$ 55	$ 107,056	$ 11,222	$ (721)	$ (13,466)
Balance (in shares) at Dec. 01, 2012		5,527,911
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	267		267
Exercise of stock options	80		80
Exercise of stock options (in shares)		6,776
Net income (loss)	1,198			1,198
Total other comprehensive loss, net of tax	(507)				(507)
Balance at Jun. 01, 2013	105,184	55	107,403	12,420	(1,228)	(13,466)
Balance (in shares) at Jun. 01, 2013		5,534,687
Balance at Nov. 30, 2013	98,115	55	107,603	4,372	(449)	(13,466)
Balance (in shares) at Nov. 30, 2013		5,534,687
Increase (Decrease) in Stockholders' Equity
Stock-based compensation	83		83
Exercise of stock options	80		80
Exercise of stock options (in shares)		3,208
Net income (loss)	(1,205)			(1,205)
Total other comprehensive loss, net of tax	(196)				(196)
Balance at May. 31, 2014	$ 96,877	$ 55	$ 107,766	$ 3,167	$ (645)	$ (13,466)
Balance (in shares) at May. 31, 2014		5,537,895