Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details)

v3.7.0.1
Earnings Per Share (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Weighted Average Number of Shares Outstanding, Diluted [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 82,318,623 83,354,013 82,333,739 83,668,521
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements 109,352 27,416 102,431 13,707
Weighted Average Number of Shares Outstanding, Diluted 82,427,975 83,381,429 82,436,170 83,682,228