Statements of Operations-Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Depreciation and amortization
Depreciation of property, plant and equipment	$ 4,328	$ 4,066	$ 12,514	$ 12,417
Amortization of intangible assets	1,469	1,233	3,988	3,359
Amortization of other assets	59	57	176	174
Depreciation and amortization	5,856	5,356	16,678	15,950
Interest expense, net
Acquisition-related accrued interest	394	235	1,083	235
Amortization of deferred financing fees and debt discount	251	241	734	725
Other	79	88	335	316
Interest expense	4,332	3,662	12,224	10,764
Interest (income)	(67)	(60)	(173)	(157)
Interest expense, net	4,265	3,602	12,051	10,607
Term B Loan
Interest expense, net
Acquisition-related accrued interest	2,888	2,887	8,750	8,808
Revolving credit facility
Interest expense, net
Acquisition-related accrued interest	$ 720	$ 211	$ 1,322	$ 680