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Marketable Securities (Details 2) (USD $)	Jan. 31, 2013
Investment securities, Fair Value	$ 432,203
Investment securities, Less Than 12 Months	24,566
Investment securities, More Than 12 Months	0
Equity Securities [Member]
Investment securities, Fair Value	181,292
Investment securities, Less Than 12 Months	19,462
Investment securities, More Than 12 Months	0
Mutual Fund [Member]
Investment securities, Fair Value	250,911
Investment securities, Less Than 12 Months	5,104
Investment securities, More Than 12 Months	$ 0

This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

+ References+ Details

- Definition

This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.

+ References+ Details

- Definition

This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer.

+ References+ Details