Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 10,653	$ 45,366
Restricted cash	5,465	9,731
Accounts receivable - trade, net of allowance of $1,839 and $3, respectively	57,661	48,071
Notes receivable	435	219
Inventories	54,322	63,866
Prepaid income tax	4	3
Prepaid expenses and other current assets	4,429	5,349
Total current assets	132,969	172,605
Property, plant and equipment, net	197,781	200,317
Land use rights, net	4,939	5,030
Operating right of use asset	4,249	5,026
Intangible assets, net	3,616	3,628
Other assets, net	4,486	2,580
TOTAL ASSETS	348,040	389,186
Current liabilities
Accounts payable	33,518	32,892
Bank acceptance payable	5,048	15,482
Accrued liabilities	17,210	18,549
Unearned revenue	1,570	1,803
Current lease liability - operating	1,087	1,149
Current portion of notes payable and long-term debt	22,506	23,197
Current portion of convertible senior notes	0	286
Total current liabilities	80,939	93,358
Non-current lease liability - operating	3,917	4,726
Convertible senior notes	76,690	76,233
TOTAL LIABILITIES	161,546	174,317
Stockholders' equity:
Preferred Stock; 5,000 shares authorized at $0.001 par value; no shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	0	0
Common Stock; 80,000 shares authorized at $0.001 par value; 40,645 and 38,148 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	41	38
Additional paid-in capital	502,387	478,972
Accumulated other comprehensive income	(1,531)	975
Accumulated deficit	(314,403)	(265,116)
TOTAL STOCKHOLDERS' EQUITY	186,494	214,869
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 348,040	$ 389,186