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Summary Of Significant Accounting And Reporting Policies (Narrative) (Details) (USD $) | 12 Months Ended
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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 |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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