Disposition of Discontinued Operations (Details) (USD $)	12 Months Ended		1 Months Ended	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Mar. 31, 2011 VLI Discontinued Unit [Member]	Jan. 31, 2012 VLI Discontinued Unit [Member]
Disposition of Discontinued Operations (Textual) [Abstract]
Maximum cash purchase price of assets			$ 3,100,000
Cash purchase price of assets, amount received by VLI at closing of the Asset Sale			800,000
Escrow Deposit			2,300,000
Cash proceeds from the escrow account				1,728,000
Disposition of Discontinued Operations (Additional Textual) [Abstract]
Net revenues of the discontinued operations	$ 0	$ 1,460,000