Stock-Based Compensation - Summary of Restricted Awards Activity (Details) - RSUs shares in Thousands	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Number of Units
Beginning Balance (in shares) | shares	9,147
Granted (in shares) | shares	2,660
Vested (in shares) | shares	(4,293)
Forfeited (in shares) | shares	(777)
Ending Balance (in shares) | shares	6,737
Weighted- Average Grant date Fair Value
Beginning Balance (in dollars per share) | $ / shares	$ 10.77
Granted (in dollars per share) | $ / shares	12.21
Vested (in dollars per share) | $ / shares	10.73
Forfeited (in dollars per share) | $ / shares	11.33
Ending Balance (in dollars per share) | $ / shares	$ 11.29