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Business Segments (Schedule Of Identifiable Assets By Geographic Area, Property, Plant & Equipment, Net By Geographic Area) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]    
Identifiable Assets by Geographic Area, Total [1] $ 523,584 $ 514,870
Property, Plant & Equipment, Net by Geographic Area, Total 170,381 166,545
Cash, Cash Equivalents, and Federal Funds Sold [1] 30,521 11,846
Property, Plant & Equipment, Net of Discontinued operations by Geographic Area, Total [1] 170,381 166,545
Disposal Group, Including Discontinued Operation, Assets 178 1,490
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment 0 0
United States    
Segment Reporting Information [Line Items]    
Identifiable Assets by Geographic Area, Total [1] 398,749 363,106
Property, Plant & Equipment, Net by Geographic Area, Total [1] 135,310 132,268
General Corporate    
Segment Reporting Information [Line Items]    
Identifiable Assets by Geographic Area, Total [1] 23,482 71,508
Property, Plant & Equipment, Net by Geographic Area, Total [1] 1,567 2,444
Operations Outside The United States | Brazil    
Segment Reporting Information [Line Items]    
Identifiable Assets by Geographic Area, Total [1] 54,299 49,157
Property, Plant & Equipment, Net by Geographic Area, Total [1] 18,615 15,588
Operations Outside The United States | China    
Segment Reporting Information [Line Items]    
Identifiable Assets by Geographic Area, Total [1] 16,355 17,763
Property, Plant & Equipment, Net by Geographic Area, Total [1] $ 14,889 $ 16,245
[1] Cash and cash equivalents includes funds held in locations outside the U.S. of $16.4 million and $9.4 million at December 31, 2021 and 2020, respectively. (c)Information on exports and foreign operations are provided on the previous page. Export sales relate almost entirely to PE Films. Operations in China relate to PE Films. Operations in Brazil relate to Flexible Packaging Films.