Summary Of Significant Accounting And Reporting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary Of Significant Accounting And Reporting Policies [Line Items]
Allowance for obsolete and slow moving inventories	$ 7,797,000	$ 4,893,000
Depreciation expense	48,480,000	41,572,000	37,744,000
Accumulated amortization	6,112,000	4,630,000
Weighted average amortization life, in years	9 years
Amortization expense	1,699,000	1,063,000	877,000
Future amortization expense, year 1	3,000,000
Future amortization expense, year 2	3,000,000
Future amortization expense, year 3	3,000,000
Future amortization expense, year 4	3,000,000
Future amortization expense, year 5	3,000,000
Advertising and promotional costs	970,000	1,179,000	922,000
Repair and maintenance of plant and equipment	$ 13,789,000	$ 11,520,000	$ 8,315,000
Shares related to stock plans not included in diluted average common shares outstanding because their effect would be antidilutive	3,332,719	1,253,824	279,333
Buildings And Improvements [Member] | Minimum [Member]
Summary Of Significant Accounting And Reporting Policies [Line Items]
Minimum estimated useful life, in years	7 years
Buildings And Improvements [Member] | Maximum [Member]
Summary Of Significant Accounting And Reporting Policies [Line Items]
Minimum estimated useful life, in years	40 years
Machinery And Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting And Reporting Policies [Line Items]
Minimum estimated useful life, in years	3 years
Machinery And Equipment [Member] | Maximum [Member]
Summary Of Significant Accounting And Reporting Policies [Line Items]
Minimum estimated useful life, in years	10 years