Consolidated Balance Sheets (USD $)	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 9,749,864	$ 7,853,343
Accounts receivable, less allowance	16,441,970	12,904,168
Inventories	30,292,120	24,494,992
Deferred income taxes	402,467	281,573
Prepaid expenses and other current assets	1,522,745	988,288
Total current assets	58,409,166	46,522,364
Property, plant and equipment:
Land	291,310	288,313
Buildings	2,294,327	2,276,662
Machinery and equipment	8,282,926	7,657,373
Total property, plant and equipment	10,868,563	10,222,348
Less: accumulated depreciation	8,515,327	7,716,224
Net plant, property and equipment	2,353,236	2,506,124
Note receivable	1,701,987	1,765,831
Intangible assets, less accumulated amortization	4,240,401	3,284,663
Deferred income taxes	967,892	1,053,926
Other assets	155,134	88,828
Total assets	67,827,816	55,221,736
Current liabilities:
Accounts payable	6,480,146	4,935,495
Other accrued liabilities	5,250,071	3,768,525
Total current liabilities	11,730,217	8,704,020
Long-term debt	24,319,829	17,568,484
Other accrued liabilities - non current	911,467	1,174,305
Total liabilities	36,961,513	27,446,809
STOCKHOLDERS' EQUITY
Common stock, par value $2.50: authorized 8,000,000 shares; issued - 4,487,524 shares in 2012 and 4,454,024 shares in 2011, including treasury stock	11,218,055	11,134,303
Treasury stock, at cost, 1,362,072 shares in 2012 and 1,319,047 shares in 2011	(12,283,251)	(11,844,354)
Additional paid-in capital	5,636,274	5,120,277
Accumulated other comprehensive loss	(786,893)	(1,038,319)
Retained earnings	27,082,118	24,403,020
Total stockholders' equity	30,866,303	27,774,927
Total liabilities and stockholders' equity	$ 67,827,816	$ 55,221,736