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Note 5 - Revenue (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
  

March 31,

  

December 31,

  

March 31,

 

($ in thousands)

 

2022

  

2021

  

2021

 

Contract liabilities

 $268  $1,062  $2,927 
Revenue, Initial Application Period, Cumulative Effect Transition [Table Text Block]

($ in thousands)

 

Contract liabilities

 

Balance, December 31, 2021

 $1,062 

Non-cancelable contracts with customers entered into during the period

  - 

Revenue recognized related to non-cancelable contracts with customers during the period

  (794)

Balance, March 31, 2022

 $268