Note 4 - Fair Value Measurements and Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

	September 30, 2020								December 31, 2019
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Other long-term liabilities:
Interest rate swaps	$	3,208	$	-	$	3,208	$	-	$	288	$	-	$	288	$	-

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

		Notional		Fair
	Balance Sheet Location	Amount		Value
At September 30, 2020:
Interest rate swaps	Other long-term liabilities	$	129,938	$	3,208
At December 31, 2019:
Interest rate swaps	Other long-term liabilities	$	133,313	$	288

Derivative Instruments, Gain (Loss) [Table Text Block]

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2020			2019			2020			2019
Loss recognized in accumulated other comprehensive loss	$	(342	)	$	(396	)	$	(3,818	)	$	(362	)
(Loss) gain reclassified from accumulated other comprehensive loss to income		(507	)		197			(898	)		648

Effect of Cash Flow Hedge Accounting on the Statement of Operations [Table Text Block]

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2020			2019			2020			2019
Recorded as Interest Expense:
Hedged interest payments	$	(1,570	)	$	(2,327	)	$	(5,328	)	$	(5,524	)
(Loss) gain on interest rate swap		(507	)		197			(898	)		648