Accounts and Notes Receivable, net - Schedule of Accounts Receivable (Details) (USD $)	6 Months Ended
	Dec. 31, 2012	Jun. 30, 2012
Receivables [Abstract]
Trade receivables	$ 43,401,000	$ 40,687,000
Other receivables	1,260,000	1,921,000
Allowance for doubtful accounts	(909,000)	(1,872,000)
Accounts and notes receivable, net	43,752,000	40,736,000
Recovery of an account previously deemed uncollectible	$ 800,000