Subsequent Events - Additional Information (Detail) (USD $)			1 Months Ended		1 Months Ended
	Sep. 30, 2013	Jun. 30, 2011	Dec. 04, 2013 Fourth Term Note Subsequent Event	Dec. 05, 2013 Fourth Term Note Subsequent Event	May 11, 2012 Second Term Note	Jul. 05, 2012 Second Term Note
Subsequent Event [Line Items]
Borrowing, repaying and reborrowing capacity	$ 20,000,000		$ 10,000,000		$ 15,000,000
Outstanding principal, amortization period			36 months
Term note, annual fixed interest rate			3.16%
Funds obtained under term notes		$ 16,427,000		$ 10,000,000		$ 9,346,000
Term note, Maturity date			Dec. 02, 2016		May 02, 2015