Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Abstract]
Goodwill and other intangibles		$ 4,915
Doubtful accounts	$ 2,878	3,561
Insurance (primarily product liability)	1,594	1,934
Vacation	893	993
Inventory	628	520
Deferred compensation	338	304
Other	430	549
Total deferred tax assets	6,761	12,776
Depreciation	8,067	9,440
Goodwill and other intangibles	1,698
Total deferred tax liabilities	9,765	9,440
Net deferred tax assets (liabilities)	$ (3,004)	$ 3,336