20. SUMMARIZED QUARTERLY UNAUDITED FINANCIAL DATA (Detail) - Schedule of Quarterly Financial Information (USD $)	3 Months Ended												12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net sales	$ 7,646,114	$ 7,042,056	$ 6,804,168	$ 3,737,181	$ 6,078,012	$ 5,415,230	$ 3,848,508	$ 4,880,619	$ 6,768,920	$ 5,833,904	$ 5,472,936	$ 4,899,840	$ 25,229,519	$ 20,222,369	$ 22,975,600
Gross profit	2,852,056	2,961,935	2,776,502	1,426,592	2,351,331	2,316,241	1,380,086	1,848,626	3,273,775	2,565,869	2,343,781	1,911,511	10,017,086	7,896,284	10,094,936
Operating income (loss)	1,961	685,224	801,325	(131,493)	921,191	826,730	(73,214)	454,452	1,846,183	1,157,869	907,048	505,758	1,357,017	2,129,159	4,416,858
Net income (loss)	$ 176,787	$ 490,452	$ 551,670	$ (76,109)	$ 699,469	$ 541,000	$ (21,372)	$ 301,577	$ 1,284,616	$ 782,295	$ 586,738	$ 333,743	$ 1,142,800	$ 1,520,674	$ 2,987,392
Basic income (loss) per common share (in Dollars per share)	$ 0.04	$ 0.10	$ 0.12	$ (0.02)	$ 0.15	$ 0.12	$ 0.00	$ 0.07	$ 0.28	$ 0.17	$ 0.13	$ 0.07	$ 0.24	$ 0.33	$ 0.65
Diluted income (loss) per common share (in Dollars per share)	$ 0.04	$ 0.10	$ 0.11	$ (0.02)	$ 0.14	$ 0.11	$ 0.00	$ 0.06	$ 0.26	$ 0.16	$ 0.12	$ 0.07	$ 0.23	$ 0.31	$ 0.60