CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 64,747	$ 70,637
Accounts receivable, net	16,858	10,731
Inventories, net	18,153	18,337
Prepaid expenses and other	2,049	1,541
Total current assets	101,807	101,246
Other assets:
Note receivable from affiliate	29,200	29,500
Goodwill	23,742	23,742
Other noncurrent	591	607
Total other assets	53,533	53,849
Property and equipment:
Land	4,940	4,940
Buildings	23,146	23,146
Equipment	68,659	68,227
Construction in progress	935	1,010
Gross property and equipment	97,680	97,323
Less accumulated depreciation	69,219	68,373
Net property and equipment	28,461	28,950
Total assets	183,801	184,045
Current liabilities:
Accounts payable and accrued liabilities	9,497	12,198
Income taxes payable to affiliate	1,804	952
Total current liabilities	11,301	13,150
Noncurrent liabilities -
Deferred income taxes	3,404	3,239
Stockholders' equity:
Preferred stock
Additional paid-in capital	55,232	55,987
Retained earnings	113,740	111,545
Total stockholders' equity	169,096	167,656
Total liabilities and stockholders’ equity	183,801	184,045
Commitments and contingencies (Note 1)
Class A Common Stock
Stockholders' equity:
Common stock	124	124
Total stockholders' equity	$ 124	$ 124