Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Doubtful accounts	$ 3,202	$ 3,245
Insurance (primarily product liability)	2,224	2,412
Vacation	907	961
Environmental	604	745
Inventory	557	414
Goodwill and other intangibles	296	697
Other	293	432
Total deferred tax assets	8,083	8,906
Depreciation	6,755	7,339
Other	4	29
Total deferred tax liabilities	6,759	7,368
Net deferred tax assets (liabilities)	$ 1,324	$ 1,538