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Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Property, Plant and Equipment, Useful Lives [Table Text Block]

		Years
Buildings			20	-	50
Machinery and equipment			5	-	15
Software			3	-	5

Property, Plant and Equipment [Table Text Block]

		2019				2018
Land		$	4,998			$	3,869
Buildings			110,162				106,940
Machinery and equipment			182,922				177,668
			298,082				288,477
Less accumulated depreciation			(186,303	)			(174,984	)
Property, plant and equipment, net		$	111,779			$	113,493

Schedule of Finite-Lived Intangible Assets [Table Text Block]

		Years
Technology and drawings			13	-	20
Customer relationships			9	-	15
Other intangibles			2	-	18

Schedule of Product Warranty Liability [Table Text Block]

		2019				2018				2017
Balance at beginning of year		$	1,380			$	1,098			$	1,435
Provision			1,747				1,689				1,377
Claims			(1,689	)			(1,407	)			(1,714	)
Balance at end of year		$	1,438			$	1,380			$	1,098

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