Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017
Inventories [Abstract]
Total inventories	$ 110,224	$ 99,397
Raw materials, net of reserves	15,151	15,043
Work in process and finished parts, net of reserves	7,652	7,047
Finished goods, net of reserves	$ 87,421	$ 77,307