Note 13 - Interest and Other Income, Net (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

Schedule of Other Nonoperating Income (Expense) [Table Text Block]

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
Interest income	$	1,850		$	1,583		$	5,207		$	4,606
Amortization of premium on available-for-sale securities		(168	)		(314	)		(384	)		(1,122	)
Gain on deferred compensation plan investments		74			717			2,630			949
Foreign currency exchange gain		175			700			47			915
Other		326			28			327			39
Total	$	2,257		$	2,714		$	7,827		$	5,387