CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 28, 2013	Dec. 29, 2012
Current assets:
Cash and cash equivalents	$ 19,838	$ 59,056
Investments	2,866,350	2,887,172
Accounts receivable, net	23,143,545	18,781,735
Inventories	36,983,687	32,308,931
Deferred income taxes	2,025,718	2,298,181
Other current assets	4,574,635	4,672,211
Total current assets	69,613,773	61,007,286
Property, plant and equipment, at cost	94,573,923	92,795,659
Less, Accumulated depreciation and amortization	49,840,247	49,857,671
Property, plant and equipment, net	44,733,676	42,937,988
Other assets	1,295,885	1,142,809
Total assets	115,643,334	105,088,083
Current liabilities:
Current maturities of long-term debt	666,668	16,934
Trade accounts payable	15,059,061	11,936,544
Other accrued liabilities	11,037,225	10,409,930
Total current liabilities	26,762,954	22,363,408
Long-term debt	15,089,171	14,089,063
Deferred income taxes	1,430,729	1,472,730
Other long-term liabilities	50,048
Total liabilities	43,332,902	37,925,201
Stockholders' equity	72,310,432	67,162,882
Total liabilities and stockholders' equity	$ 115,643,334	$ 105,088,083