Long-term Debt and Revolving Credit Facility (Details 1) (USD $)	Jan. 31, 2013
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	$ 763,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	973,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	1,263,000
Long-term Debt, Maturities, Repayments of Principal in Year Four	233,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	1,945,000
Revolving Credit Facility [Member]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	903,000
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Real Estate Mortgage Note [Member]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	233,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	233,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	233,000
Long-term Debt, Maturities, Repayments of Principal in Year Four	233,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	1,945,000
Equipment Term Note [Member]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	380,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	380,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	127,000
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Equipment Credit Line Note [Member]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	150,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	360,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	$ 0