Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share (Narrative) (Details)

v3.8.0.1
Net Loss Per Share (Narrative) (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Dilutive effect of outstanding stock options and shares associated with long-term incentive compensation plans 0 0 0 0
Stock Compensation Plan [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Dilutive effect of outstanding stock options and shares associated with long-term incentive compensation plans 0 0 0 0
Shares not included in the computation of diluted earnings per share 1,145,417 964,563 1,145,417 846,584
Deferred Stock [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Shares not included in the computation of diluted earnings per share 181,224 159,689 181,224 159,689