Consolidated Statements Of Income And Comprehensive Income (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Consolidated Statements Of Income And Comprehensive Income [Abstract]
Sales	$ 26,601,341	$ 22,617,132	$ 80,030,021	$ 66,876,986
Less: discounts and allowances	(2,808,811)	(1,997,399)	(8,772,576)	(6,306,675)
Net sales	23,792,530	20,619,733	71,257,445	60,570,311
Cost of goods sold	16,513,357	13,342,566	47,217,179	38,771,897
Depreciation expense	410,797	407,567	1,226,629	1,219,721
Total cost of goods sold	16,924,154	13,750,133	48,443,808	39,991,618
Gross profit	6,868,376	6,869,600	22,813,637	20,578,693
Selling expenses	2,815,126	2,974,294	8,291,960	8,300,810
General and administrative	1,671,080	1,620,967	5,567,649	4,626,853
Amortization expense	178,201	197,129	533,884	574,538
Total operating expenses	4,664,407	4,792,390	14,393,493	13,502,201
Income from operations	2,203,969	2,077,210	8,420,144	7,076,492
Other income (expense):
Interest and dividend income	36,535	16,270	82,166	52,321
Rental income	2,231	4,270	8,889	10,284
Interest expense	(59,887)	(41,897)	(133,610)	(136,000)
Gain (loss) on sale of investments, net, reclassified from OCI	161	4,024	121,441	26,415
Other income	209,175	0	219,404	0
Total other income (expense)	188,215	(17,333)	298,290	(46,980)
Income before provision for income taxes	2,392,184	2,059,877	8,718,434	7,029,512
Provision for income taxes	702,257	657,697	3,258,928	2,483,216
Net income	1,689,927	1,402,180	5,459,506	4,546,296
Basic and diluted earnings per common share	$ 0.10	$ 0.09	$ 0.33	$ 0.28
Weighted average number of shares outstanding	16,346,017	16,366,974	16,346,017	16,380,793
COMPREHENSIVE INCOME
Net income	1,689,927	1,402,180	5,459,506	4,546,296
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on investments (net of tax)	29,356	62,266	17,079	95,996
Less reclassification adjustment for (gains) losses included in net income (net of taxes)	(91)	(2,274)	(68,614)	(14,924)
Comprehensive income	$ 1,719,192	$ 1,462,172	$ 5,407,971	$ 4,627,368

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.