Inventories (Details) (USD $)	Dec. 31, 2013	Jun. 30, 2013
Inventories [Abstract]
Raw materials	$ 12,228,000	$ 10,684,000
Work in process and finished parts	5,763,000	5,410,000
Finished goods	80,862,000	76,323,000
Total inventories	98,853,000	92,417,000
Inventories valued on the FIFO method	1,600,000	1,700,000
Inventories valued on the LIFO method	$ 2,800,000	$ 2,600,000