Accounting for Stock-Based Compensation (Detail Textuals) (Restricted Stock, USD $)	1 Months Ended	6 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended
	Jul. 31, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 2006 Employee Equity Compensation Restricted Stock Plan ("Employee Plan")	Sep. 30, 2014 2006 Outside Director Equity Compensation Restricted Stock Plan ("Director Plan")	Sep. 30, 2014 Employee and Director Plans	Sep. 30, 2014 Employee and Director Plans General and administrative Expense	Sep. 30, 2013 Employee and Director Plans General and administrative Expense	Sep. 30, 2014 Employee and Director Plans General and administrative Expense	Sep. 30, 2013 Employee and Director Plans General and administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted common stock, shares issued (in shares)	81,000			779,778	242,000
Fair value of restricted shares	$ 14.04
Unrecognized compensation cost of non-vested restricted stock award, period of recognition		3 years				3 years
Compensation expense							$ 380,000	$ 370,000	$ 753,000	$ 732,000
Unrecognized compensation cost related to the non-vested restricted stock awards		$ 2,800,000	$ 3,200,000
Number of non-vested restricted shares		231,000	266,000