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Stock-Based Compensation - RSU's (Details) - The Plans - RSU's - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Number of Shares      
Non-vested shares at the beginning of the year 394 27  
Granted (in shares)   508 35
Vested (in shares) (131) (136) (8)
Cancelled (in shares) (22) (5)  
Non-vested shares at the end of the year 241 394 27
Weighted Average Grant-Date Fair Value      
Non-vested shares at the beginning of the year (in dollars per share) $ 4.61 $ 4.46  
Granted (in dollars per share)   4.61 $ 4.46
Vested (in dollars per share) 4.60 4.60 4.46
Cancelled (in dollars per share) 4.62 4.62  
Non-vested shares at the end of the year (in dollars per share) $ 4.61 $ 4.61 $ 4.46
Total intrinsic value of the restricted stock units outstanding $ 0.3