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Note 9 - Debt, Credit Facility and Leases (Tables)
3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Line of Credit Facilities [Table Text Block]

Interest rates:

       

Spread over the London Interbank Offered Rate

  2.25 - 4.00%

Spread over alternative base rate

  1.25 - 3.00%

Standby fee per annum on undrawn amounts

  0.5625 - 1.00%

Covenant financial ratios:

       

Senior leverage ratio (debt secured by liens/EBITDA)

 

not more than 2.50:1

Leverage ratio (total debt less unencumbered cash/EBITDA) (1)

 

not more than 4.25:1

Interest coverage ratio (EBITDA/interest expense)

 

not less than 3.00:1

Finance Lease, Liability, Fiscal Year Maturity [Table Text Block]

Twelve-month period ending March 31,

       

2021

  $ 5,712  

2022

    4,065  

2023

    1,785  

2024

    299  

Total

    11,861  

Less: imputed interest

    (660 )

Finance lease liability

  $ 11,201  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Twelve-month period ending March 31,

       

2021

  $ 4,441  

2022

    3,656  

2023

    2,704  

2024

    2,001  

2025

    547  

More than 5 years

    2,733  

Total

    16,082  

Effect of discounting

    (1,151 )

Operating lease liability

  $ 14,931