Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 46,772	$ 59,977
Restricted cash	11,296	7,051
Accounts receivable - trade, net of allowance of $30 and $30, respectively	51,453	34,655
Inventories	111,427	85,028
Prepaid income tax	177	224
Prepaid expenses and other current assets	8,805	5,869
Total current assets	229,930	192,804
Property, plant and equipment, net	249,740	248,444
Land use rights, net	5,640	5,598
Operating right of use asset	7,792	7,768
Financing right of use asset	96	119
Intangible assets, net	4,031	4,081
Deferred income tax assets	0	7,287
Other assets, net	558	724
TOTAL ASSETS	497,787	466,825
Current liabilities
Current portion of notes payable and long-term debt	44,292	33,371
Accounts payable	56,134	32,828
Bank acceptance payable	13,366	6,310
Current lease liability - operating	983	965
Current lease liability - financing	17	17
Accrued liabilities	17,526	17,864
Total current liabilities	132,318	91,355
Notes payable and long-term debt, less current portion	14,564	16,552
Convertible senior notes	77,646	77,041
Non-current lease liability - operating	8,007	7,983
Non-current lease liability - financing	86	100
TOTAL LIABILITIES	232,621	193,031
Stockholders' equity:
Preferred Stock; 5,000 shares authorized at $0.001 par value; no shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	0	0
Common Stock; 45,000 shares authorized at $0.001 par value; 22,887 and 20,140 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	23	20
Additional paid-in capital	335,035	303,401
Accumulated other comprehensive (loss) and income	5,178	430
Accumulated deficit	(75,070)	(30,057)
TOTAL STOCKHOLDERS' EQUITY	265,166	273,794
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 497,787	$ 466,825