Accounts and Notes Receivable, net - Schedule of Accounts Receivable (Details) (USD $)	3 Months Ended
	Sep. 30, 2012	Jun. 30, 2012
Receivables [Abstract]
Trade receivables	$ 43,024,000	$ 40,687,000
Other receivables	1,065,000	1,921,000
Allowance for doubtful accounts	(950,000)	(1,872,000)
Accounts and notes receivable, net	43,139,000	40,736,000
Recovery of an account previously deemed uncollectible	$ 800,000