Segment Information (Details) (USD $)	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Segment Reporting Information [Line Items]
Revenues, sales to unaffiliated customers	$ 35,849,126	$ 34,692,174
Operating Profit	2,297,117	1,585,284
Interest expense	(68,569)	(86,076)
Other income	7,283	8,588
Income before income taxes	2,235,831	1,507,796
Industrial Hardware [Member]
Segment Reporting Information [Line Items]
Revenues, sales to unaffiliated customers	14,130,751	15,216,089
Operating Profit	1,095,834	603,987
Security Products [Member]
Segment Reporting Information [Line Items]
Revenues, sales to unaffiliated customers	12,547,036	10,980,151
Operating Profit	555,287	248,702
Metal Products [Member]
Segment Reporting Information [Line Items]
Revenues, sales to unaffiliated customers	9,171,339	8,495,934
Operating Profit	$ 645,996	$ 732,595