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Total Revenues Gross Profit and Long Lived Assets Excluding Long Term Deferred Tax Assets (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Revenues from External Customers and Long-Lived Assets        
Total revenues $ 129,536 $ 151,202 $ 386,347 $ 430,959
Gross profit 104,852 116,249 308,653 327,384
Long-lived assets 88,853 94,651 88,853 94,651
Domestic        
Revenues from External Customers and Long-Lived Assets        
Total revenues 77,837 89,732 242,775 252,879
Gross profit 62,583 68,677 195,435 191,681
Long-lived assets 82,260 83,322 82,260 83,322
EMEA        
Revenues from External Customers and Long-Lived Assets        
Total revenues 40,450 44,296 109,447 131,366
Gross profit 32,802 33,019 84,637 96,864
Long-lived assets 4,089 6,160 4,089 6,160
Other Regions        
Revenues from External Customers and Long-Lived Assets        
Total revenues 11,249 17,174 34,125 46,714
Gross profit 9,467 14,553 28,581 38,839
Long-lived assets $ 2,504 $ 5,169 $ 2,504 $ 5,169