Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current Assets
Cash and cash equivalents	$ 45,366	$ 24,685
Restricted cash	9,731	10,902
Accounts receivable - trade, net of allowance of $3 and $28, respectively	48,071	61,175
Notes receivable	219	339
Inventories	63,866	79,679
Prepaid income tax	3	0
Prepaid expenses and other current assets	5,349	6,384
Total current assets	172,605	183,164
Property, plant and equipment, net	200,317	210,184
Land use rights, net	5,030	5,238
Operating right of use asset	5,026	5,566
Financing right of use asset	0	26
Intangible assets, net	3,628	3,699
Other assets, net	2,580	386
TOTAL ASSETS	389,186	408,263
Current liabilities
Accounts payable	32,892	47,845
Bank acceptance payable	15,482	12,337
Accrued liabilities	18,549	17,222
Unearned revenue	1,803	3,000
Current lease liability - operating	1,149	1,041
Current lease liability - financing	0	63
Current portion of notes payable and long-term debt	23,197	57,074
Current portion of convertible notes	286	0
Total current liabilities	93,358	138,582
Convertible senior notes	76,233	79,506
Non-current lease liability - operating	4,726	5,505
TOTAL LIABILITIES	174,317	223,593
Stockholders' equity:
Preferred Stock; 5,000 shares authorized at $0.001 par value; no shares issued and outstanding at December 31, 2023 and December 31, 2022, respectively	0	0
Common Stock; 80,000 shares authorized at $0.001 par value; 38,148 and 28,622 shares issued and outstanding at December 31, 2023 and December 31, 2022, respectively	38	29
Additional paid-in capital	478,972	391,526
Accumulated other comprehensive income	975	2,183
Accumulated deficit	(265,116)	(209,068)
TOTAL STOCKHOLDERS' EQUITY	214,869	184,670
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 389,186	$ 408,263