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Mezzanine Equity Mezzanine Equity (Tables)
 6 Months Ended
Jun. 30, 2016
Noncontrolling Interest [Abstract]  
Redeemable Noncontrolling Interest [Table Text Block]
The following table summarizes the changes in the contingently redeemable noncontrolling interests for the six months ended June 30, 2016:
Balance at December 31, 2015
$
28

Cash received from noncontrolling interests
52

Release of contingency
(56
)
Balance at June 30, 2016
$
24