CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash	$ 11,671	$ 6,469
Accounts receivable, net	1,512	1,967
Other receivable	202	217
Inventory	9,020	9,189
Prepaid expenses and other current assets	11,309	10,121
Total current assets	33,714	27,963
Property and equipment, net	484	496
Operating lease - right-of-use asset	1,289	1,176
Intangible assets, net	19,627	20,116
Other assets	275	1,012
Total assets	55,389	50,763
Current liabilities:
Accounts payable	3,320	4,974
Accrued liabilities	3,461	3,798
Deferred revenue	170
Operating lease liability, current	469	348
Notes payable, net of discount (includes note designated at Fair Value Option amounting to $10.2 million as of March 31, 2024 and $0 December 31, 2023, respectively)	10,394	4,867
Total current liabilities	17,814	13,987
Operating lease liability, net of current portion	873	886
Deferred revenue - long term	680
Notes payable, net of discount, net of current portion (includes notes designated at Fair Value Option amounting to $21.7 million as of March 31, 2024 and $31.0 million December 31, 2023, respectively)	21,719	30,993
Total liabilities	41,086	45,866
Commitments and contingencies (See Note 6)
Redeemable preferred stock: $0.0001 par value; 179 and 0 shares designated from 10,000.000 preferred stock authorized at March 31, 2024 and December 31, 2023; 99 and 0 shares issued and outstanding at March 31, 2024 and December 31, 2023	2,485
Stockholders' equity
Additional paid-in capital	329,647	313,854
Noncontrolling interest	(180)	(64)
Accumulated deficit	(317,215)	(308,248)
Accumulated other comprehensive loss	(461)	(652)
Total stockholders' equity	11,818	4,897
Total liabilities, redeemable preferred stock and stockholder's equity	55,389	50,763
Series G convertible preferred stock
Stockholders' equity
Preferred stock value
Series H convertible preferred stock
Stockholders' equity
Preferred stock value
Series I convertible preferred stock
Stockholders' equity
Preferred stock value
Common stock - voting
Stockholders' equity
Common stock value	$ 27	$ 7