Quarterly report pursuant to Section 13 or 15(d)

Earnings (loss) per Share (Details)

v3.10.0.1
Earnings (loss) per Share (Details) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Earnings (loss) per Share        
Basic WASO 181,323 181,798 181,319 181,784
Potentially dilutive shares 1,148 1,351 1,273 1,313
Diluted WASO 182,471 183,149 182,592 183,097