XML 55 R33.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stockholders' Equity - Summary of Performance Based Restricted Stock Unit Activity (Details) - Performance-based restricted stock units
3 Months Ended
Mar. 31, 2017
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Number of Units, Beginning Balance | shares 149,412
Number of Units, Granted | shares 239,792
Number of Units, Vested | shares (7,518)
Number of Units, Forfeited | shares 0
Number of Units, Ending Balance | shares 381,686
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]  
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares $ 33.51
Weighted Average Grant Date Fair Value, Granted | $ / shares 28.43
Weighted Average Grant Date Fair Value, Vested | $ / shares 33.51
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 0.00
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares $ 30.32