Statements of Operations-Additional Information

9 Months Ended

Mar. 31, 2015

Supplemental Income Statement Elements [Abstract]

Statements of Operations-Additional Information

5.     Statements of Operations—Additional Information

​	Three Months						Nine Months
For the Periods Ended March 31	2015			2014			2015			2014
Depreciation and amortization	​			​			​			​
Depreciation of property, plant and equipment	​	$	4,066	​	$	3,920	​	$	12,417	​	$	11,878
Amortization of intangible assets	​	​	1,233	​	​	1,202	​	​	3,359	​	​	3,737
Amortization of other assets	​	​	57	​	​	—	​	​	174	​	​	—
​	​	$	5,356	​	$	5,122	​	$	15,950	​	$	15,615