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Note 15 - Income Taxes (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
  

Three Months Ended June 30,

  

Six Months Ended June 30,

 

(dollars in thousands)

 

2021

  

2020

  

2021

  

2020

 

Provision for (benefit from) income taxes

 $15,619  $(1,782) $(6,836) $(16,492)

Effective tax rate

  21.9%  64.7%  41.7%  18.3%