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Summary of Nonvested Restricted Stock (Detail) - Restricted Stock
shares in Thousands
3 Months Ended
Sep. 30, 2015
$ / shares
shares
Number of Shares  
Beginning Balance 1,866
Granted 451
Vested (622)
Forfeited (65)
Ending Balance 1,630
Weighted Average Grant Date Fair Value  
Beginning Balance | $ / shares $ 10.72
Granted | $ / shares 15.75
Vested | $ / shares 10.44
Forfeited | $ / shares 10.53
Ending Balance | $ / shares $ 12.23