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Share-Based Compensation and Equity - Restricted Stock Rollforward (Details) - 2012 Plan - Restricted Stock
shares in Thousands
12 Months Ended
Dec. 31, 2019
$ / shares
shares
Units  
Beginning of Period (shares) | shares 3,473
Grants issued (shares) | shares 2,525
Forfeited (shares) | shares (436)
Vested (shares) | shares (327)
Ending of Period (shares) | shares 5,235
Grant Date Fair Value  
Beginning of Period (in dollars per share) | $ / shares $ 15.53
Grants issued (in dollars per share) | $ / shares 12.44
Forfeited (in dollars per share) | $ / shares 16.73
Vested (in dollars per share) | $ / shares 14.61
Ending of Period (in dollars per share) | $ / shares $ 14.00