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Stock Based Compensation (Narrative) (Detail) - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Dec. 15, 2015
Dec. 06, 2012
Dec. 06, 2007
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options exercised, total intrinsic value $ 1,700 $ 1,713 $ 3,607      
Weighted average remaining contractual term 4 years          
Stock issued pursuant to employee stock incentive plans $ 113 77 93      
Non-cash restricted stock expense 22 22 20      
Non-cash stock option plan expense is included in selling, general and administrative expenses 0 21 207      
Non-cash stock compensation included in selling, general and administrative expenses $ 6,719 $ 4,537 $ 3,156      
Common Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Restricted stock awarded and premium shares vested, common shares 7 5 7      
Restricted Stock | Employees            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock granted, shares 221 165 214      
Restricted stock units, vesting period 3 years 3 years 3 years      
Restricted Stock | Non Employee Directors            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock granted, shares 14 12 11      
Restricted stock units, vesting period 1 year 1 year 1 year      
Performance-vested restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock granted, shares 142 116 131      
Upper limit of target grant, shares 248 203 196      
Performance-vested restricted stock units, vesting percentage 100.00% 100.00% 100.00%      
Restricted stock units, vesting period 3 years 3 years 3 years      
Restricted stock awards and restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock granted, shares 422          
Non-cash stock compensation included in selling, general and administrative expenses $ 6,697 $ 4,494 $ 2,929      
Remaining stock-based compensation expense $ 7,997          
Remaining stock-based compensation expense, period for recognition 1 year 9 months 18 days          
Restricted stock units | Employees            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock granted, shares 46 67 32      
2010 Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Maximum number of shares of common stock that may be issued         5,250  
Shares of common stock available for grant 174          
2007 Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Maximum number of shares of common stock that may be issued           700
Shares of common stock available for grant 0          
2015 Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Maximum number of shares of common stock that may be issued       4,250    
Shares of common stock available for grant 4,250