Discontinued Operations - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 30, 2013	Sep. 30, 2013	Jun. 04, 2012	Oct. 31, 2013 Subsequent Event
Discontinued Operations [Line Items]
Total consideration for asset purchase agreement			$ 46,000
Balance in escrow account		3,350	4,000
Escrow amount released to settle liabilities	(650)
Escrow account maturity		15 months
Claim received for indemnification				$ 6,800