v3.22.2.2
Note 10 - Fair Value of Financial Instruments - Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Cash and cash equivalents $ 26,268 $ 34,656
Restricted cash 8,307 6,480
Note receivable 9 8,148
Total assets 34,584 49,284
Bank acceptance payable 13,760 8,198
Convertible senior notes 56,524 67,588
Total liabilities 70,284 75,786
Fair Value, Inputs, Level 1 [Member]    
Cash and cash equivalents 26,268 34,656
Restricted cash 8,307 6,480
Note receivable 0 0
Total assets 34,575 41,136
Bank acceptance payable 0 0
Convertible senior notes 0 0
Total liabilities 0 0
Fair Value, Inputs, Level 2 [Member]    
Cash and cash equivalents 0 0
Restricted cash 0 0
Note receivable 9 8,148
Total assets 9 8,148
Bank acceptance payable 13,760 8,198
Convertible senior notes 56,524 67,588
Total liabilities 70,284 75,786
Fair Value, Inputs, Level 3 [Member]    
Cash and cash equivalents 0 0
Restricted cash 0 0
Note receivable 0 0
Total assets 0 0
Bank acceptance payable 0 0
Convertible senior notes 0 0
Total liabilities $ 0 $ 0