Note 10 - Derivatives and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule of Derivative Instruments [Table Text Block]

	Year ended December 31,
	2019		2020
Derivative assets:
Derivatives designated as cash flow hedging instruments:
Foreign exchange option contracts	$	14	$	—
Foreign exchange forward contracts		42		—
Total	$	56	$	—

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]

	Year ended December 31,
	2018			2019		2020
Derivatives designated as cash flow hedging instruments:
Foreign exchange option contracts	$	(146	)	$	55	$	(8	)
Foreign exchange forward contracts		(285	)		385		640
	$	(431	)	$	440	$	632

Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Year ended December 31,
	2018		2019			2020
Derivatives designated as cash flow hedging instruments:
Foreign exchange option contracts	$	132	$	(27	)	$	(6	)
Foreign exchange forward contracts		222		(280	)		(682	)
	$	354	$	(307	)	$	(688	)