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Share-Based Compensation (Narrative) (Details) - $ / shares
3 Months Ended
Mar. 31, 2017
May 02, 2017
2012 Plan [Member] | Restricted Stock Awards [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares issued 297,000  
Weighted-average grant date fair value per share $ 6.23  
Subsequent Event [Member] | 2017 Plan [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Shares available for grant under Stock Incentive Plan   0
Number of shares that may be granted under Stock Incentive Plan   4,000,000