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Statements of Operations-Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Interest expense, net    
Acquisition-related accrued interest $ 393 $ 345
Amortization of debt issuance costs and debt discount 253 242
Other 81 86
Interest expense 4,587 3,868
Interest (income) (680) (49)
Interest expense, net 3,907 3,819
Depreciation and amortization    
Depreciation of property, plant and equipment 4,731 4,111
Amortization of intangible assets 1,528 1,259
Amortization of other assets 59 59
Depreciation and amortization 6,318 5,429
Term B Loans    
Interest expense, net    
Acquisition-related accrued interest 2,905 2,935
Revolving credit facility    
Interest expense, net    
Acquisition-related accrued interest $ 955 $ 260