CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,336	$ 1,029
Short-term investment securities	47,400	21,313
Accounts receivable, net	585	2,159
Inventory, net	2,881	2,034
Prepaid expenses and other assets	2,183	1,806
Total current assets	54,385	28,341
Property, plant and equipment, net	5,841	2,483
Operating leases right-of-use assets, net	1,723	247
Intangible assets, net	7,919	8,211
Investments	2,345	6,536
Other assets	3,741	5,876
Total assets	75,954	51,694
Current liabilities:
Notes payable	596	539
Operating lease obligations	308	247
Accounts payable	2,173	1,116
Accrued expenses	1,489	931
Accrued payroll	2,255	2,208
Accrued excise taxes and fees	1,270	1,691
Accrued severance	217	339
Deferred income	119	272
Total current liabilities	8,427	7,343
Long-term liabilities:
Operating lease obligations	1,432
Severance obligations	21	241
Total liabilities	9,880	7,584
Commitments and contingencies (Note 12)
Shareholders' equity
Preferred stock, $.00001 par value, 10,000,000 shares authorized
Common stock, par value	2	1
Capital in excess of par value	244,247	189,439
Accumulated other comprehensive (loss) income	(162)	74
Accumulated deficit	(178,013)	(145,404)
Total shareholders' equity	66,074	44,110
Total liabilities and shareholders' equity	$ 75,954	$ 51,694