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Statements of Operations-Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Interest expense, net    
Amortization of debt issuance costs and debt discount $ 221 $ 253
Acquisition-related accrued interest 253 393
Other 239 81
Interest expense (3,427) (4,587)
Interest (income) (309) (680)
Interest expense, net 3,118 3,907
Depreciation and amortization    
Depreciation of property, plant and equipment 5,183 4,731
Amortization of intangible assets 1,449 1,528
Amortization of other assets 12 59
Depreciation and amortization 6,644 6,318
Term loan    
Interest expense, net    
Interest expense 2,033 2,905
Revolving credit facility    
Interest expense, net    
Interest expense $ 681 $ 955