XML 94 R80.htm IDEA: XBRL DOCUMENT v3.10.0.1
Restricted Stock Activity (Detail) - Restricted Stock Awards
12 Months Ended
Dec. 31, 2018
$ / shares
shares
Shares  
Outstanding at beginning of year | shares 1,530,338
Vested | shares (1,085,743)
Forfeited | shares (8,371)
Outstanding at end of year | shares 436,224
Weighted-average Grant Date Fair Value  
Outstanding at beginning of year | $ / shares $ 21.41
Vested | $ / shares 21.41
Forfeited | $ / shares 21.60
Outstanding at end of year | $ / shares $ 21.41