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Balance Sheets-Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2015
Jun. 30, 2014
Accounts receivable, net          
Trade accounts receivable       $ 114,477 $ 115,093
Allowance for doubtful accounts $ (1,235) $ (658) $ (658) (3,378) (1,235)
Trade accounts receivable, net       111,099 113,858
Allowance for doubtful accounts          
Balance at beginning of period 1,235 658 1,041    
Provision for bad debts 2,587 226 (124)    
Effect of changes in exchange rates (218) $ 351 (265)    
Bad debt write-offs (recovery) (226)   6    
Balance at end of period $ 3,378 $ 1,235 $ 658    
Inventories, net          
Raw materials       40,012 44,306
Work-in-process       7,617 7,518
Finished goods       102,157 91,360
Inventory, net       149,786 143,184
Property, plant and equipment, net          
Property, plant and equipment, gross       231,203 233,667
Accumulated depreciation       (126,789) (124,508)
Property, plant and equipment, net       104,414 109,159
Land          
Property, plant and equipment, net          
Property, plant and equipment, gross       9,130 9,773
Buildings and improvements          
Property, plant and equipment, net          
Property, plant and equipment, gross       50,276 51,364
Machinery and equipment          
Property, plant and equipment, net          
Property, plant and equipment, gross       $ 171,797 $ 172,530