Statements of Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net sales	$ 3,628,571	$ 3,735,100	$ 7,580,732	$ 7,623,792
Costs and expenses:
Cost of sales	1,363,295	1,465,119	2,774,451	3,004,959
Operating expenses	635,891	548,254	1,197,459	1,151,117
Total costs and expenses	1,999,186	2,013,373	3,971,910	4,156,076
Income from operations	1,629,385	1,721,727	3,608,822	3,467,716
Other income:
Investment income	64,925	41,757	119,107	111,348
Gain on sale of assets				2,750
Income from damage settlement	292,830		585,660
Total other income	357,755	41,757	704,767	114,098
Income before income taxes	1,987,140	1,763,484	4,313,589	3,581,814
Provision for income taxes	644,600	570,400	1,406,400	1,160,100
Net Income	$ 1,342,540	$ 1,193,084	$ 2,907,189	$ 2,421,714
Earnings per common share (Basic and Diluted) (in Dollars per share)	$ 0.29	$ 0.26	$ 0.63	$ 0.53
Weighted average shares – basic and diluted (in Shares)	4,596,439	4,596,439	4,596,439	4,596,439