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Statements of Operations-Additional Information (Tables)
12 Months Ended
Jun. 30, 2014
Supplemental Income Statement Elements [Abstract]  
Schedule of additional information of statements of operations
For the Years Ended June 30
2014
2013
2012
Depreciation and amortization
 
 
 
Depreciation of property, plant and equipment
$
16,439
 
$
14,917
 
$
14,425
 
Amortization of intangible assets
4,897
 
4,106
 
3,048
 
Amortization of other assets
117
 
 
54
 
Depreciation and amortization
$
21,453
 
$
19,023
 
$
17,527
 
 
 
Research and development expenditures
$
8,212
 
$
6,638
 
$
7,189