Lease Commitments (Detail Textuals) (USD $)	0 Months Ended	9 Months Ended		167 Months Ended	0 Months Ended
	Jun. 04, 1993	Jan. 31, 2013	Jan. 31, 2012	Apr. 30, 2007	Feb. 07, 2013 Citi Bank Subsequent Event sqft
Operating Leased Assets [Line Items]
Term of lease	15 years
Extended term of lease				5 years
Area of land for lease					44,493
Base rent under the sublease agreement					$ 1,468,269
Security deposit in cash					489,423
Rental expenses		$ 1,882,000	$ 1,882,000