Revenue Recognition and Accounts Receivables - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net revenues for settlements and filings of prior year Medicare and Medicaid cost reports	$ 176	$ 496	$ 176	$ 547