Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 5,306	$ 4,167
Accounts receivable, less allowance of $1,079 in 2021 and $1,152 in 2020	36,088	27,173
Inventories	48,795	50,704
Prepaid expenses and other current assets	2,458	1,642
Total current assets	92,647	83,686
Property, plant and equipment:
Land	1,764	1,770
Buildings	12,800	12,899
Machinery and equipment	29,532	24,524
Total property, plant and equipment	44,096	39,193
Less: accumulated depreciation	20,914	18,954
Net property, plant and equipment	23,182	20,239
Operating lease right-of-use asset, net	3,187	2,422
Goodwill	4,800	4,800
Intangible assets, less accumulated amortization	17,615	18,721
Total assets	141,431	129,868
Current liabilities:
Accounts payable	6,695	7,601
Operating lease liability - current portion	945	873
Current portion of mortgage payable	267	267
Other accrued liabilities	11,215	11,460
Total current liabilities	19,122	20,201
Long-term debt	40,454	38,767
Mortgage payable, net of current portion	2,711	2,911
Operating lease liability - non-current portion	2,485	1,654
Other non-current liabilities	111	110
Total liabilities	64,883	67,151
Commitments and Contingencies (see note 2)
STOCKHOLDERS' EQUITY
Common stock, par value $2.50: authorized 8,000,000 shares; 5,061,345 shares issued and 3,559,687 shares outstanding in 2021 and 4,840,571 shares issued and 3,338,913 shares outstanding in 2020	12,653	12,101
Additional paid-in capital	11,575	7,931
Retained earnings	67,998	58,033
Treasury stock, at cost - 1,501,658 shares in 2021 and 2020	(14,522)	(14,522)
Accumulated other comprehensive loss:
Translation adjustment	(1,156)	(826)
Total stockholders’ equity	76,548	62,717
Total liabilities and stockholders’ equity	$ 141,431	129,868
PPP Loan
Current liabilities:
Long-term debt		$ 3,508