CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 75,959	$ 70,637
Accounts receivable, net	15,106	10,731
Inventories, net	23,536	18,337
Prepaid expenses and other	3,056	1,541
Total current assets	117,657	101,246
Other assets:
Note receivable from affiliate	21,800	29,500
Goodwill	23,742	23,742
Other noncurrent	598	607
Total other assets	46,140	53,849
Property and equipment:
Land	5,070	4,940
Buildings	23,161	23,146
Equipment	69,974	68,227
Construction in progress	1,240	1,010
Gross property and equipment	99,445	97,323
Less accumulated depreciation	70,902	68,373
Net property and equipment	28,543	28,950
Total assets	192,340	184,045
Current liabilities:
Accounts payable and accrued liabilities	14,294	12,198
Income taxes payable to affiliate	1,391	952
Total current liabilities	15,685	13,150
Noncurrent liabilities -
Deferred income taxes	3,665	3,239
Stockholders' equity:
Preferred stock
Additional paid-in capital	55,336	55,987
Retained earnings	117,530	111,545
Total stockholders' equity	172,990	167,656
Total liabilities and stockholders’ equity	192,340	184,045
Commitments and contingencies (Note 1)
Class A Common Stock
Stockholders' equity:
Common stock	124	124
Total stockholders' equity	$ 124	$ 124