Note 12 - Other Income, Net (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
Interest income	$	2,770		$	2,388		$	5,052		$	4,762
Amortization of premium on available-for-sale securities		(1,113	)		(627	)		(1,926	)		(1,121	)
Gain (loss) on deferred compensation plan investments		1,862			3,572			3,039			(178	)
Foreign currency exchange loss		(388	)		(133	)		(373	)		(130	)
Other		(100	)		-			(174	)		153
Total	$	3,031		$	5,200		$	5,618		$	3,486