CONDENSED CONSOLIDATED STATEMENTS OF NET INCOME (LOSS) AND COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2013	May 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF NET INCOME (LOSS) AND COMPREHENSIVE INCOME (LOSS)
Net sales	$ 30,874	$ 28,640	$ 60,304	$ 54,602
Cost of goods sold	17,369	15,080	32,484	27,958
Gross profit	13,505	13,560	27,820	26,644
Operating expenses
Selling, general and administrative	10,840	10,148	22,327	21,157
Depreciation and amortization	542	340	1,034	616
Contingent consideration buy-out expense			8,732
Total operating expenses	11,382	10,488	32,093	21,773
Operating income (loss)	2,123	3,072	(4,273)	4,871
Interest expense	127	103	197	214
Income (loss) before provision for taxes	1,996	2,969	(4,470)	4,657
Income tax expense	823	1,551	745	2,445
Net income (loss) and comprehensive income (loss)	$ 1,173	$ 1,418	$ (5,215)	$ 2,212
Earnings (loss) per common share - basic (in dollars per share)	$ 0.02	$ 0.02	$ (0.08)	$ 0.03
Earnings (loss) per common share - diluted (in dollars per share)	$ 0.02	$ 0.02	$ (0.08)	$ 0.03
Weighted average shares outstanding
Basic (in shares)	67,047	65,234	66,849	65,139
Diluted (in shares)	68,411	66,459	66,849	65,836