Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 8,618	$ 7,926
Accounts receivable, net of allowance for doubtful accounts and discounts & allowances of $1,100 and $1,350 at March 31, 2021 and December 31, 2020 respectively	9,961	8,002
Inventories, net	6,736	6,930
Prepaid expenses and other current assets	1,110	1,163
Refundable income taxes	46	31
Total current assets	26,471	24,052
Property and equipment, net	20,744	21,048
Operating lease right-of-use asset	317	345
Intangible assets
Goodwill and indefinite-lived intangibles	12,824	12,824
Other intangible assets, net	0	0
Total intangible assets	12,824	12,824
Other assets	1,800	1,800
Total assets	62,156	60,069
Current liabilities
Accounts payable	5,289	5,592
Accrued expenses	2,587	2,196
Accrued income taxes	1,215	653
Total current liabilities	9,091	8,441
Line of credit	2,774	2,768
Operating lease liabilities	143	165
Deferred income taxes, net	1,764	1,764
Other long-term liabilities	160	77
Total liabilities	13,932	13,215
Commitments and contingencies
Stockholders' equity
Preferred stock, no par value; 2,500 shares authorized; no shares issued or outstanding at March 31, 2021 and December 31, 2020	0	0
Common stock, no par value; 40,000 shares authorized; 17,274 shares issued; 15,604 outstanding at March 31, 2021 and December 31, 2020	6,509	6,509
Paid-in-capital	2,664	2,600
Treasury stock, at cost	(12,450)	(12,450)
Retained earnings	51,501	50,195
Total stockholders' equity	48,224	46,854
Total liabilities and stockholders' equity	$ 62,156	$ 60,069