Note 3 - Fair Value Measurements (Tables)
|12 Months Ended|
Dec. 31, 2019
|Schedule of Derivative Assets at Fair Value [Table Text Block]||
|Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]||
Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements.
No definition available.