Note 6 - Debt, Credit Facility and Leases (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Line of Credit Facilities [Table Text Block]

Interest rates:
Spread over the London Interbank Offer 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) (1)	not more than 2.50:1
Leverage ratio (total debt less unencumbered cash/EBITDA) (2)	not more than 6.00:1
Interest coverage ratio (EBITDA/interest expense)	not less than 3.00:1

Finance Lease, Liability, Maturity [Table Text Block]

Twelve-month period ending December 31,
2020	$	5,866
2021		4,654
2022		2,307
2023		622
Total		13,449
Less: imputed interest		(806	)
Net finance lease obligation	$	12,643

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Twelve-month period ending December 31,
2020	$	5,861
2021		3,907
2022		2,874
2023		2,536
2024		716
More than 5 years		2,918
Total		18,812
Effect of discounting		(2,414	)
Operating lease liability	$	16,398