Shareholders' Equity (Detail Textuals 2) (USD $)	12 Months Ended
	Mar. 31, 2015
Declaration Date August 03, 2009
Stockholders Equity Note [Line Items]
Dividend declaration date	Aug. 03, 2009
Dividend declared (in dollars per share)	$ 0.10
Declaration Date August 02, 2010
Stockholders Equity Note [Line Items]
Dividend declaration date	Aug. 02, 2010
Dividend declared (in dollars per share)	$ 0.125
Declaration Date January 27, 2012
Stockholders Equity Note [Line Items]
Dividend declaration date	Jan. 27, 2012
Dividend declared (in dollars per share)	$ 0.15
Declaration Date December 3, 2012
Stockholders Equity Note [Line Items]
Dividend declaration date	Dec. 03, 2012
Dividend declared (in dollars per share)	$ 1.00
Declaration Date July 26, 2013
Stockholders Equity Note [Line Items]
Dividend declaration date	Jul. 26, 2013
Dividend declared (in dollars per share)	$ 0.17