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SEGMENT INFORMATION (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Net Sales $ 78,351 $ 79,473 $ 60,333 $ 75,314 $ 74,803 $ 74,601 $ 56,550 $ 65,146 $ 293,471 $ 271,100 $ 229,231
Long-Lived Assets 86,277       80,409       86,277 80,409 38,423
United States [Member]
                     
Net Sales                 225,397 212,779 179,129
Long-Lived Assets 80,268       75,293       80,268 75,293 34,334
Canada [Member]
                     
Net Sales                 16,859 11,049 9,361
Europe [Member]
                     
Net Sales                 7,230 8,014 8,008
Australia [Member]
                     
Net Sales                 29,465 25,049 20,073
Asia [Member]
                     
Net Sales                 8,956 8,277 7,432
South Africa [Member]
                     
Net Sales                 5,564 5,932 5,228
Other Country [Member]
                     
Long-Lived Assets $ 6,009       $ 5,116       $ 6,009 $ 5,116 $ 4,089