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Share-Based Compensation (Narrative Disclosures) (Details)
$ in Millions
3 Months Ended
Mar. 31, 2017
USD ($)
shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Number of shares available for grant | shares 272,031
Deferred compensation expense yet to be recognized | $ $ 2.0
Period of time that deferred compensation expense will be recognized 2 years 7 months 6 days