Note 20 - Quarterly Results of Operations (Unaudited) (Tables)

12 Months Ended

Nov. 30, 2013

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

	2013
	First Quarter (1)		Second Quarter		Third Quarter (2)		Fourth Quarter (3)
Net sales	$	79,849	$	81,223	$	77,152	$	83,062
Gross profit		41,360		41,826		38,723		44,085
Net income		980		1,953		556		1,607
Basic earnings per share		0.09		0.18		0.05		0.15
Diluted earnings per share		0.09		0.18		0.05		0.15

	2012
	First Quarter (4)			Second Quarter (5)		Third Quarter (6)		Fourth Quarter (7)
Net sales	$	60,968		$	67,454	$	64,438	$	76,812
Gross profit		31,671			35,661		33,818		40,172
Net income (loss)		(596	)		8,042		2,371		16,896
Basic earnings (loss) per share		(0.05	)		0.72		0.22		1.57
Diluted earnings (loss) per share		(0.05	)		0.71		0.21		1.55