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Business Segments (Schedule Of Segment Reporting Information By Segment) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  | $ 930,721 | [1],[2] | $ 857,342 | [1],[2] | $ 775,932 | [1],[2] |
Add back freight |  |  |  |  |  |  |  |  |  |  | 28,625 |  | 24,846 |  | 18,488 |  |
Sales as shown in consolidated statements of income | 231,096 |  | 243,194 | 243,530 | 241,526 | 233,038 |  | 216,648 | 215,859 | 216,644 | 959,346 |  | 882,188 |  | 794,420 |  |
Total |  |  |  |  |  |  |  |  |  |  | 85,838 |  | 73,451 |  | 56,201 |  |
Interest income |  |  |  |  |  |  |  |  |  |  | 594 |  | 418 |  | 1,023 |  |
Interest expense |  |  |  |  |  |  |  |  |  |  | 2,870 |  | 3,590 |  | 1,926 |  |
Gain (loss) on investment accounted for under the fair value method |  |  |  |  |  |  |  |  |  |  | 3,400 |  | 16,100 |  | 1,600 |  |
Stock option-based compensation expense |  |  |  |  |  |  |  |  |  |  | 1,155 |  | 1,432 |  | 1,940 |  |
Corporate expenses, net |  |  |  |  |  |  |  |  |  |  | 31,857 | [3] | 23,443 | [3] | 16,169 | [3] |
Income from continuing operations before income taxes |  |  |  |  |  |  |  |  |  |  | 52,932 |  | 61,504 |  | 38,789 |  |
Income taxes |  |  |  |  |  |  |  |  |  |  | 16,995 | [3] | 18,319 | [3] | 10,244 | [3] |
Income from continuing operations | 9,402 |  | 7,428 | 9,590 | 9,517 | 13,850 |  | 14,210 | 7,388 | 7,737 | 35,937 |  | 43,185 |  | 28,545 |  |
Income (loss) from discontinued operations | 0 |  | (450) | (8,300) | (5,240) | (3,377) |  | (6,783) | (35) | (4,739) | (13,990) | [3] | (14,934) | [3] | (3,690) | [3] |
Net income | 9,402 |  | 6,978 | 1,290 | 4,277 | 10,473 |  | 7,427 | 7,353 | 2,998 | 21,947 |  | 28,251 |  | 24,855 |  |
Freight |  |  |  |  |  |  |  |  |  |  | 28,625 |  | 24,846 |  | 18,488 |  |
Other long-term assets | 52,617 | [1] |  |  |  | 48,822 | [1] |  |  |  | 52,617 | [1] | 48,822 | [1] | 68,939 |  | 73,191
Foreign Country |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other long-term assets | 38,600 |  |  |  |  | 28,600 |  |  |  |  | 38,600 |  | 28,600 |  |  |  |
Pension Benefits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Defined benefit pension plan net liability | (42,461) |  |  |  |  | (83,250) |  |  |  |  | (42,461) |  | (83,250) |  | (57,800) |  |
kaleo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on investment accounted for under the fair value method |  |  |  |  |  |  |  |  |  |  | 3,400 | [3] | 16,100 | [3] | 1,600 | [3] |
Income taxes |  |  |  |  |  |  |  |  |  |  | (1,586) |  | 9,642 |  | (927) |  |
Net income |  |  |  |  |  |  |  |  |  |  | (1,740) |  | 15,464 |  | (708) |  |
Other long-term assets | 33,560 |  |  |  |  | 53,288 |  |  |  |  | 33,560 |  | 53,288 |  |  |  |
Alleghany and Bath County, Virginia |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized Gain (Loss) on Investment Property |  |  |  |  |  |  |  |  |  |  | 1,018 |  | 0 |  | 0 |  |
Aluminum Extrusions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  | 309,482 |  | 245,465 |  | 240,392 |  |
Ongoing operations |  |  |  |  |  |  |  |  |  |  | 18,291 |  | 9,037 |  | 3,457 |  |
Plant shutdowns, asset impairments, restructurings and other |  |  |  |  |  |  |  |  |  |  | (2,748) | [3] | (5,427) | [3] | 58 | [3] |
Film Products |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  |  |  | 621,239 |  | 611,877 |  | 535,540 |  |
Ongoing operations |  |  |  |  |  |  |  |  |  |  | 70,966 |  | 69,950 |  | 59,493 |  |
Plant shutdowns, asset impairments, restructurings and other |  |  |  |  |  |  |  |  |  |  | $ (671) | [3] | $ (109) | [3] | $ (6,807) | [3] |
[1] | Information on exports and foreign operations are provided on the next page. Cash and cash equivalents includes funds held in locations outside the U.S. of $38.6 million and $28.6 million at December 31, 2013 and 2012, respectively. Export sales relate almost entirely to Film Products. Operations outside the U.S. in The Netherlands, Hungary, China, Italy (sold in 2011), Brazil and India also relate to Film Products. Sales from our locations in The Netherlands, Hungary and Italy are primarily to customers located in Europe. Sales from our locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia. Sales activity at the new film products manufacturing facility in India was not significant in 2011.
[2] | The difference between total consolidated sales as reported in the consolidated statements of income and segment and geographic net sales reported in this note is freight of $28.6 million in 2013, $24.8 million in 2012 and $18.5 million in 2011.
[3] | See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.

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