Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Anti-dilutive shares) (Details)

v3.3.0.814
Summary of Significant Accounting Policies (Anti-dilutive shares) (Details) - shares
shares in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Weighted Average Number Diluted Shares Outstanding Adjustment 0 0 0 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 2,961 2,103 2,961 2,103
Options [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 0 25 0 25
Stock-settled stock appreciation rights (SARs) [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,028 1,270 1,028 1,270
Restricted stock/units [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,745 620 1,745 620
Performance contingent SARs [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 188 188 188 188