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Comprehensive Income
6 Months Ended
Jun. 30, 2011
Comprehensive Income (Loss) [Abstract]  
Comprehensive Income Note [Text Block]
Comprehensive Income
    The difference between net income and comprehensive income for the Company is due to currency translation adjustments and unrealized gains on investments.
    The components of comprehensive income are as follows:




Three Months Ended June 30,


Six Months Ended June 30,




2011


2010


2011


2010
Net income


$
6,957




$
6,513




$
13,696




$
8,558


Change in net unrealized losses on investments, net of tax


(1
)


22




(6
)


16


Change in currency translation adjustments


293




(895
)


172




(497
)
Total comprehensive income


$
7,249




$
5,640




$
13,862




$
8,077