CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 65,075	$ 63,255
Accounts receivable, net	12,277	11,870
Inventories, net	19,166	18,348
Prepaid expenses and other	1,254	1,624
Total current assets	97,772	95,097
Other assets:
Note receivable from affiliate	30,500	28,100
Goodwill	23,742	23,742
Other noncurrent	590	590
Total other assets	54,832	52,432
Property and equipment:
Land	4,940	4,940
Buildings	23,057	23,047
Equipment	68,047	67,718
Construction in progress	763	1,002
Gross property and equipment	96,807	96,707
Less accumulated depreciation	67,445	65,692
Net property and equipment	29,362	31,015
Total assets	181,966	178,544
Current liabilities:
Accounts payable and accrued liabilities	11,075	12,078
Income taxes payable to affiliates	658	984
Total current liabilities	11,733	13,062
Noncurrent liabilities -
Deferred income taxes	3,486	3,287
Stockholders' equity:
Preferred stock
Additional paid-in capital	55,987	55,869
Retained earnings	110,636	106,202
Total stockholders' equity	166,747	162,195
Total liabilities and stockholders’ equity	181,966	178,544
Commitments and contingencies (Note 1)
Class A Common Stock
Stockholders' equity:
Common stock	124	124
Total stockholders' equity	$ 124	$ 124