Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details)

v3.8.0.1
Earnings Per Share (Details) - shares
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Weighted Average Number of Shares Outstanding, Diluted [Abstract]    
Weighted Average Number of Shares Outstanding, Basic 82,253,470 82,349,024
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 102,578 95,434
Weighted Average Number of Shares Outstanding, Diluted 82,356,048 82,444,458