Commitments and Contingencies - Additional Information (Detail) (USD $)				1 Months Ended	6 Months Ended	9 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Aug. 31, 2013 Revolving Line Of Credit Expires In July 2013	Aug. 31, 2013 Revolving Line Of Credit Expires In August 2015	Jun. 30, 2014 Loan Due May 2016	Sep. 30, 2013 Loan Due May 2016	Dec. 31, 2013 Loan Due May 2016
Commitments and Contingencies [Line Items]
Guarantee of affiliate's obligations			$ 24,000,000
Line of credit maturity period				2014-08
Loan to affiliate						3,402,000
Loan to affiliate, due date					2016-05
Due from affiliate	$ 6,000,000	$ 6,000,000			$ 2,455,000		$ 2,984,000