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Employee Stock and Benefit Plans (Restricted Stock Unit and Award Activity) (Details) - Restricted Stock Unit - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Number of Shares [Roll Forward]      
Nonvested shares, beginning of year (in shares) 400 490 1,249
Granted (in shares) 296 159 232
Vested (in shares) (109) (193) (581)
Forfeited/Canceled (in shares) (263) (56) (410)
Nonvested shares, end of year (in shares) 324 400 490
Weighted Average Grant Date Fair Value [Roll Forward]      
Nonvested shares, beginning of year (in dollars per share) $ 7.47 $ 7.80 $ 8.52
Granted (in dollars per share) 5.44 7.60 7.18
Vested (in dollars per share) 7.01 8.35 9.13
Forfeited/Canceled (in dollars per share) 7.27 7.73 7.74
Nonvested shares, beginning of year (in dollars per share) $ 5.94 $ 7.47 $ 7.80
Total Fair Value of Vested Awards      
Total fair value of vested awards $ 763 $ 1,608 $ 4,438
Additional Information      
Aggregate intrinsic value, outstanding $ 1,400    
Weighted average remaining contractual term 1 year