Restricted Share Grants - Additional Information (Detail) (USD $)	0 Months Ended	7 Months Ended	9 Months Ended	0 Months Ended	1 Months Ended	7 Months Ended	9 Months Ended	0 Months Ended
	Sep. 05, 2014	Jul. 31, 2014	Sep. 30, 2013	Sep. 05, 2014 Restricted Shares [Member]	Jul. 31, 2014 Restricted Shares [Member]	Jul. 31, 2014 Restricted Shares [Member]	Sep. 30, 2014 Restricted Shares [Member]	May 28, 2013 2007 Stock Option Plan [Member]	Feb. 28, 2013 2007 Stock Option Plan [Member]	May 21, 2013 2007 Stock Option Plan [Member] Restricted Shares [Member]	Jan. 31, 2013 2007 Stock Option Plan [Member] Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance										1,000,000	600,000
Increase in shares issuable under the Trust's 2007 Stock Option Plan by shareholders											500,000
Initial Restricted Shares issued								500,000	100,000
Non-cash compensation expense		$ 1,450,000	$ 557,000		$ 120,000	$ 1,450,000
Restricted Shares forfeited	10,000
Shares issued				10,000			600,000
Shares outstanding							600,000