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Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2012
Accounting Policies [Abstract]  
Redeemable Noncontrolling Interest [Table Text Block]

The following table presents changes in Redeemable Noncontrolling Interests.

Years Ended December 31,
201220112010
Beginning Balance as of January 1,$107,432$77,560$33,728
Redemptions(16,712)(9,068)(7,987)
Granted4,18915,31839,142
Changes in redemption value22,91224,53211,500
Currency translation adjustments132(910)1,177
Ending Balance as of December 31,$117,953$107,432$77,560