Annual report pursuant to Section 13 and 15(d)

Supplemental Cash Flow Information - Narratives (Details)

v3.8.0.1
Supplemental Cash Flow Information - Narratives (Details) - 2017 Omnibus Plan - Stock Option
12 Months Ended
Dec. 31, 2017
shares
Share-based Compensation Arrangement by Share-based Payment Award  
Exercised (shares) 32,366
Shares reserved for stock options exercised (shares) 20,303
Common stock  
Share-based Compensation Arrangement by Share-based Payment Award  
Shares issued, shares 12,063