Note 13 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Level 1		Level 2		Level 3		Total
December 31, 2020
Liabilities:
Fuel hedge	$	—	$	—	$	297	$	297
Interest rate swaps		—		—		3,893		3,893
	$	—	$	—	$	4,190	$	4,190
June 30, 2021
Assets:
Fuel hedge	$	—	$	—	$	81	$	81
Liabilities:
Interest rate swaps	$	—	$	—	$	2,278	$	2,278

Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

Ending balance, December 31, 2020	$	(4,190	)
Change in estimated fair value		1,993
Ending balance, June 30, 2021*	$	(2,197	)