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Inventories
12 Months Ended
Dec. 31, 2011
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
INVENTORIES
 
      Inventories valued at LIFO represented 61% and 63% of total inventory for the years ended December 31, 2011 and 2010, respectively. The excess of current costs over LIFO-valued inventories was $9,459,000 and $7,654,000 on December 31, 2011 and December 31, 2010, respectively. (The $1,805,000 increase in LIFO reserve during 2011 came from increases in inventory levels within U.S. operations. The impact of the application of the LIFO method on the Statement of Income for the years ended December 31, 2011, was a decrease to cost of sales of $1,805,000, and a decrease in 2010 of $1,452,000 and a decrease in 2009 of $3,685,000.) Inventories consisted of the following on a cost basis, net of reserves:
 
 
December 31,
(in thousands)
 
2011
 
2010
Finished goods and parts
 
$
90,226

 
$
80,102

Work in process
 
10,570

 
9,857

Raw materials
 
13,509

 
9,345

 
 
$
114,305

 
$
99,304