Stockholders' Equity (Details Textual)	3 Months Ended
May 31, 2013
Preferred Stock, Dividend Rate, Percentage	2.00%

The percentage rate used to calculate dividend payments on preferred stock.

No definition available.

Name:	us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration