Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details 4)

v3.8.0.1
Stock-Based Compensation (Details 4)
9 Months Ended
Sep. 30, 2017
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Options, Outstanding | shares 2,052,223
DSUs granted | shares 1,199,897
DSUs forfeited | shares 163,546
DSUs vested | shares 590,536
Number of Options, Outstanding | shares 2,498,038
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares $ 11.58
Weighted Average Grant Date Fair Value, DSUs granted | $ / shares 15.12
Weighted Average Grant Date Fair Value, DSUs forfeited | $ / shares 12.52
Weighted Average Grant Date Fair Value, DSUs vested | $ / shares 12.07
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares $ 13.15
Deferred Stock Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Options, Outstanding | shares 14,953
DSUs granted | shares 0
DSUs forfeited | shares 0
DSUs vested | shares 14,953
Number of Options, Outstanding | shares 0
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares $ 8.36
Weighted Average Grant Date Fair Value, DSUs granted | $ / shares 0
Weighted Average Grant Date Fair Value, DSUs forfeited | $ / shares 0
Weighted Average Grant Date Fair Value, DSUs vested | $ / shares 8.36
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares $ 0