XML 54 R42.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stock Options - Summary of Restricted Stock Unit Activity (Detail) - Restricted Stock Units
shares in Thousands
3 Months Ended
Mar. 31, 2017
$ / shares
shares
Restricted Stock Units  
Outstanding at beginning of period (in shares) | shares 1,454
Granted (in shares) | shares 949
Vested (in shares) | shares (469)
Forfeited and expired (in shares) | shares (42)
Outstanding at end of period (in shares) | shares 1,892
Weighted- Average Grant-Date Fair Value  
Outstanding at beginning of period (in dollars per share) | $ / shares $ 12.68
Granted (in dollars per share) | $ / shares 14.10
Vested (in dollars per share) | $ / shares 13.41
Forfeited and expired (in dollars per share) | $ / shares 13.43
Outstanding at end of period (in dollars per share) | $ / shares $ 13.28