Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Payables and Accruals [Abstract]
Accrued postretirement benefits	$ 1,051	$ 919
Accrued workers’ compensation liabilities	2,382	1,947
Short-term pension liabilities	347	347
Business Combination, Contingent Consideration, Liability	100	0
Other (including net taxes payable)	2,272	2,105
Other current liabilities	$ 6,152	$ 5,318