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Note 12 - Fair Value Measurements	6 Months Ended
	Jun. 30, 2022
Notes to Financial Statements
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]	(12) FAIR VALUE MEASUREMENTS Other Financial Instruments Our primary financial instruments consist of cash and cash equivalents, restricted cash, trade receivables and trade payables with book values that are considered to be representative of their respective fair values. The carrying value for cash equivalents is considered to be representative of its fair value due to the short duration and conservative nature of the cash equivalent investment portfolio. In the second quarter of 2022, we agreed to a transaction with PEMEX, the Mexican national oil company, to exchange $8.6 million in accounts receivable for an equal face amount of seven year 8.75% PEMEX corporate bonds (PEMEX Note). As part of this agreement, we are not allowed to sell the PEMEX Note for 90 days from issuance and have determined that it should be classified as “available for sale.” At June 30, 2022 we recorded a $0.8 million in mark-to-market loss in other comprehensive income. We disclose the fair value of our long-term debt in Note 10 and the fair value of our assets held for sale in Note 15.

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- Definition

The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-URI https://asc.fasb.org/topic&trid=2155941

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