Condensed Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 4,167,376	$ 6,821,883
Accounts receivable, less allowance	27,173,431	25,484,865
Inventories	50,704,197	39,261,105
Prepaid expenses and other current assets	1,640,904	1,578,248
Total current assets	83,685,908	73,146,101
Property, plant and equipment:
Land	1,770,453	1,420,104
Buildings	12,898,761	10,095,529
Machinery and equipment	24,524,045	19,111,801
Total property, plant and equipment	39,193,259	30,627,434
Less: accumulated depreciation	18,954,352	16,591,890
Net property, plant and equipment	20,238,907	14,035,544
Intangible assets, less accumulated amortization	18,721,423	15,792,738
Goodwill	4,799,829	4,696,370
Operating lease right-of-use asset, net	2,421,669	2,989,272
Other assets		88,828
Total assets	129,867,736	110,748,853
Current liabilities:
Accounts payable	7,601,123	6,692,692
Operating lease liability - current portion	872,908	1,047,498
Current portion of mortgage payable	266,667	266,667
Other accrued liabilities	11,460,024	8,576,248
Total current liabilities	20,200,722	16,583,105
Long-term debt	38,767,167	33,240,407
Mortgage payable, net of current portion	2,911,111	3,177,778
Operating lease liability - non-current portion	1,654,025	1,960,996
Deferred income taxes	110,221	49,284
Other non-current liabilities		32,302
Total liabilities	67,151,293	55,043,872
STOCKHOLDERS' EQUITY
Common stock, par value $2.50: authorized 8,000,000 shares; issued - 4,840,571 shares in 2020 and 4,838,071 in 2019, including treasury stock	12,100,663	12,094,413
Treasury stock, at cost, 1,501,658 in 2020 and 1,487,238 shares in 2019	(14,522,178)	(14,235,190)
Additional paid-in capital	7,930,673	8,262,208
Accumulated other comprehensive loss	(825,967)	(1,987,870)
Retained earnings	58,033,252	51,571,420
Total stockholders' equity	62,716,443	55,704,981
Total liabilities and stockholders' equity	129,867,736	$ 110,748,853
PPP Loan
Current liabilities:
Long-term debt	$ 3,508,047