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Note 4 - Fair Value Measurements - Summary of Financial Assets and Liabilities Measured At Fair Value On a Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Non-current accounts receivable, net $ 9,177 $ 9,688
Finance lease liabilities 14,516 14,820
Fair Value, Inputs, Level 1 [Member]    
Non-current accounts receivable, net 0 0
Finance lease liabilities 0 0
Fair Value, Inputs, Level 2 [Member]    
Non-current accounts receivable, net 9,177 9,688
Finance lease liabilities 14,516 14,820
Fair Value, Inputs, Level 3 [Member]    
Non-current accounts receivable, net 0 0
Finance lease liabilities $ 0 $ 0