Note 6 - Debt (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

		Fair Value of Derivatives
Derivatives Not Designated as Hedging Instruments	Balance Sheet Location	December 31, 2018
Interest rate swap assets - current	Other current assets	$	44

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

Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Net Income on Derivatives	Amount of Gain (Loss) Recognized in Net Income on Derivatives
		Three Months ended September 30,			Nine Months ended September 30,
		2018			2018		2019
Interest rate swaps	Interest expense	$	(37	)	$	277	$	(44	)