Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended			1 Months Ended	12 Months Ended
	Mar. 31, 2013	Sep. 30, 2012	Nov. 18, 2013 Secondary Public Offering	Mar. 18, 2013 Secondary Public Offering	Aug. 06, 2012 Secondary Public Offering	Apr. 30, 2012 Solera Partners, L.P	Mar. 31, 2012 Solera Partners, L.P
Related Party Transaction [Line Items]
Annual advisory fee							$ 600,000
Contract termination, fee						1,300,000
Sale of stock, transaction date					Aug. 06, 2012
Offering expenses	$ 500,000	$ 700,000	$ 300,000	$ 500,000	$ 700,000
Shares repurchased and retired (in shares)				500,000
Common stock price				$ 38.25